Question

I am using a sphinx search server.
Currently if I want to find words as “čebula”, I have to write “čebula” in the search.
I want to configure it to be able to find results with keywords “cebula” or “ćebula” etc.
I also want the same to work with for example “fällen”.
It should work both ways, so searching f.e. “cesnja” should also find a result “češnja”.

This is my current settings in sphinx.conf:

source src
{
    type            = mysql
    sql_host        = ****
    sql_user        = ****
    sql_pass        = ****
    sql_db          = ****
    sql_port        = 3306

    sql_query       = \
        SELECT id, Title, Content \
        FROM Post
    sql_ranged_throttle = 0

    sql_query_pre = SET CHARACTER_SET_RESULTS=utf8
    sql_query_pre = SET NAMES utf8
}

index idx1
{
    source          = src
    path            = /usr/local/sphinx/var/data/idx1
    docinfo         = extern
    mlock           = 0

    morphology      = metaphone

    expand_keywords = 1
    enable_star     = 1
    min_prefix_len = 3
    min_word_len        = 1

    charset_type        = utf-8
    charset_table = 0..9, a..z, _, A..Z->a..z,-, U+002C, \
    U+010C->U+010D, U+0106->U+0107, U+0160->U+0161, U+017D->U+017E, \
    U+010D->c,U+0107->c, U+0161->s, U+017E->z, \
    U+010D, U+0107, U+0161, U+017E
}

I’ve tried using different morphologys but no luck

index idx2: idx1
{
    morphology      = metaphone, stem_en, soundex
}

Answer 1

The solution to your problem is the charset_table configuration variable. The documentation for that can be found here:
http://sphinxsearch.com/docs/current.html#conf-charset-table

Here is the charset_table I use:

charset_table = 0..9, a..z, _, A..Z->a..z, U+00C0->a, U+00C1->a,
    U+00C2->a, U+00C3->a, U+00C4->a, U+00C5->a, U+00C7->c, U+00C8->e,
    U+00C9->e, U+00CA->e, U+00CB->e, U+00CC->i, U+00CD->i, U+00CE->i,
    U+00CF->i, U+00D1->n, U+00D2->o, U+00D3->o, U+00D4->o, U+00D5->o,
    U+00D6->o, U+00D8->o, U+00D9->u, U+00DA->u, U+00DB->u, U+00DC->u,
    U+00DD->y, U+00E0->a, U+00E1->a, U+00E2->a, U+00E3->a, U+00E4->a,
    U+00E5->a, U+00E7->c, U+00E8->e, U+00E9->e, U+00EA->e, U+00EB->e,
    U+00EC->i, U+00ED->i, U+00EE->i, U+00EF->i, U+00F1->n, U+00F2->o,
    U+00F3->o, U+00F4->o, U+00F5->o, U+00F6->o, U+00F8->o, U+00F9->u,
    U+00FA->u, U+00FB->u, U+00FC->u, U+00FD->y, U+00FF->y, U+0100->a,
    U+0101->a, U+0102->a, U+0103->a, U+0104->a, U+0105->a, U+0106->c,
    U+0107->c, U+0108->c, U+0109->c, U+010A->c, U+010B->c, U+010C->c,
    U+010D->c, U+010E->d, U+010F->d, U+0112->e, U+0113->e, U+0114->e,
    U+0115->e, U+0116->e, U+0117->e, U+0118->e, U+0119->e, U+011A->e,
    U+011B->e, U+011C->g, U+011D->g, U+011E->g, U+011F->g, U+0120->g,
    U+0121->g, U+0122->g, U+0123->g, U+0124->h, U+0125->h, U+0128->i,
    U+0129->i, U+012A->i, U+012B->i, U+012C->i, U+012D->i, U+012E->i,
    U+012F->i, U+0130->i, U+0134->j, U+0135->j, U+0136->k, U+0137->k,
    U+0139->l, U+013A->l, U+013B->l, U+013C->l, U+013D->l, U+013E->l,
    U+0142->l, U+0143->n, U+0144->n, U+0145->n, U+0146->n, U+0147->n,
    U+0148->n, U+014C->o, U+014D->o, U+014E->o, U+014F->o, U+0150->o,
    U+0151->o, U+0154->r, U+0155->r, U+0156->r, U+0157->r, U+0158->r,
    U+0159->r, U+015A->s, U+015B->s, U+015C->s, U+015D->s, U+015E->s,
    U+015F->s, U+0160->s, U+0161->s, U+0162->t, U+0163->t, U+0164->t,
    U+0165->t, U+0168->u, U+0169->u, U+016A->u, U+016B->u, U+016C->u,
    U+016D->u, U+016E->u, U+016F->u, U+0170->u, U+0171->u, U+0172->u,
    U+0173->u, U+0174->w, U+0175->w, U+0176->y, U+0177->y, U+0178->y,
    U+0179->z, U+017A->z, U+017B->z, U+017C->z, U+017D->z, U+017E->z,
    U+01A0->o, U+01A1->o, U+01AF->u, U+01B0->u, U+01CD->a, U+01CE->a,
    U+01CF->i, U+01D0->i, U+01D1->o, U+01D2->o, U+01D3->u, U+01D4->u,
    U+01D5->u, U+01D6->u, U+01D7->u, U+01D8->u, U+01D9->u, U+01DA->u,
    U+01DB->u, U+01DC->u, U+01DE->a, U+01DF->a, U+01E0->a, U+01E1->a,
    U+01E6->g, U+01E7->g, U+01E8->k, U+01E9->k, U+01EA->o, U+01EB->o,
    U+01EC->o, U+01ED->o, U+01F0->j, U+01F4->g, U+01F5->g, U+01F8->n,
    U+01F9->n, U+01FA->a, U+01FB->a, U+0200->a, U+0201->a, U+0202->a,
    U+0203->a, U+0204->e, U+0205->e, U+0206->e, U+0207->e, U+0208->i,
    U+0209->i, U+020A->i, U+020B->i, U+020C->o, U+020D->o, U+020E->o,
    U+020F->o, U+0210->r, U+0211->r, U+0212->r, U+0213->r, U+0214->u,
    U+0215->u, U+0216->u, U+0217->u, U+0218->s, U+0219->s, U+021A->t,
    U+021B->t, U+021E->h, U+021F->h, U+0226->a, U+0227->a, U+0228->e,
    U+0229->e, U+022A->o, U+022B->o, U+022C->o, U+022D->o, U+022E->o,
    U+022F->o, U+0230->o, U+0231->o, U+0232->y, U+0233->y, U+1E00->a,
    U+1E01->a, U+1E02->b, U+1E03->b, U+1E04->b, U+1E05->b, U+1E06->b,
    U+1E07->b, U+1E08->c, U+1E09->c, U+1E0A->d, U+1E0B->d, U+1E0C->d,
    U+1E0D->d, U+1E0E->d, U+1E0F->d, U+1E10->d, U+1E11->d, U+1E12->d,
    U+1E13->d, U+1E14->e, U+1E15->e, U+1E16->e, U+1E17->e, U+1E18->e,
    U+1E19->e, U+1E1A->e, U+1E1B->e, U+1E1C->e, U+1E1D->e, U+1E1E->f,
    U+1E1F->f, U+1E20->g, U+1E21->g, U+1E22->h, U+1E23->h, U+1E24->h,
    U+1E25->h, U+1E26->h, U+1E27->h, U+1E28->h, U+1E29->h, U+1E2A->h,
    U+1E2B->h, U+1E2C->i, U+1E2D->i, U+1E2E->i, U+1E2F->i, U+1E30->k,
    U+1E31->k, U+1E32->k, U+1E33->k, U+1E34->k, U+1E35->k, U+1E36->l,
    U+1E37->l, U+1E38->l, U+1E39->l, U+1E3A->l, U+1E3B->l, U+1E3C->l,
    U+1E3D->l, U+1E3E->m, U+1E3F->m, U+1E40->m, U+1E41->m, U+1E42->m,
    U+1E43->m, U+1E44->n, U+1E45->n, U+1E46->n, U+1E47->n, U+1E48->n,
    U+1E49->n, U+1E4A->n, U+1E4B->n, U+1E4C->o, U+1E4D->o, U+1E4E->o,
    U+1E4F->o, U+1E50->o, U+1E51->o, U+1E52->o, U+1E53->o, U+1E54->p,
    U+1E55->p, U+1E56->p, U+1E57->p, U+1E58->r, U+1E59->r, U+1E5A->r,
    U+1E5B->r, U+1E5C->r, U+1E5D->r, U+1E5E->r, U+1E5F->r, U+1E60->s,
    U+1E61->s, U+1E62->s, U+1E63->s, U+1E64->s, U+1E65->s, U+1E66->s,
    U+1E67->s, U+1E68->s, U+1E69->s, U+1E6A->t, U+1E6B->t, U+1E6C->t,
    U+1E6D->t, U+1E6E->t, U+1E6F->t, U+1E70->t, U+1E71->t, U+1E72->u,
    U+1E73->u, U+1E74->u, U+1E75->u, U+1E76->u, U+1E77->u, U+1E78->u,
    U+1E79->u, U+1E7A->u, U+1E7B->u, U+1E7C->v, U+1E7D->v, U+1E7E->v,
    U+1E7F->v, U+1E80->w, U+1E81->w, U+1E82->w, U+1E83->w, U+1E84->w,
    U+1E85->w, U+1E86->w, U+1E87->w, U+1E88->w, U+1E89->w, U+1E8A->x,
    U+1E8B->x, U+1E8C->x, U+1E8D->x, U+1E8E->y, U+1E8F->y, U+1E96->h,
    U+1E97->t, U+1E98->w, U+1E99->y, U+1EA0->a, U+1EA1->a, U+1EA2->a,
    U+1EA3->a, U+1EA4->a, U+1EA5->a, U+1EA6->a, U+1EA7->a, U+1EA8->a,
    U+1EA9->a, U+1EAA->a, U+1EAB->a, U+1EAC->a, U+1EAD->a, U+1EAE->a,
    U+1EAF->a, U+1EB0->a, U+1EB1->a, U+1EB2->a, U+1EB3->a, U+1EB4->a,
    U+1EB5->a, U+1EB6->a, U+1EB7->a, U+1EB8->e, U+1EB9->e, U+1EBA->e,
    U+1EBB->e, U+1EBC->e, U+1EBD->e, U+1EBE->e, U+1EBF->e, U+1EC0->e,
    U+1EC1->e, U+1EC2->e, U+1EC3->e, U+1EC4->e, U+1EC5->e, U+1EC6->e,
    U+1EC7->e, U+1EC8->i, U+1EC9->i, U+1ECA->i, U+1ECB->i, U+1ECC->o,
    U+1ECD->o, U+1ECE->o, U+1ECF->o, U+1ED0->o, U+1ED1->o, U+1ED2->o,
    U+1ED3->o, U+1ED4->o, U+1ED5->o, U+1ED6->o, U+1ED7->o, U+1ED8->o,
    U+1ED9->o, U+1EDA->o, U+1EDB->o, U+1EDC->o, U+1EDD->o, U+1EDE->o,
    U+1EDF->o, U+1EE0->o, U+1EE1->o, U+1EE2->o, U+1EE3->o, U+1EE4->u,
    U+1EE5->u, U+1EE6->u, U+1EE7->u, U+1EE8->u, U+1EE9->u, U+1EEA->u,
    U+1EEB->u, U+1EEC->u, U+1EED->u, U+1EEE->u, U+1EEF->u, U+1EF0->u,
    U+1EF1->u, U+1EF2->y, U+1EF3->y, U+1EF4->y, U+1EF5->y, U+1EF6->y,
    U+1EF7->y, U+1EF8->y, U+1EF9->y