I have messed up with some of the settings in my XCode project and now when ever I try to find a text in project the finder window is coming as blank. I have quit my XCode and restarted my Mac multiple times but still this problem persists. This behavior is quite weird as it is happening only in a particular project and in rest of the project it is working fine. Please see the screen shot for the reference. 
I have messed up with some of the settings in my XCode project and
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This problem being related to one project only, might be related to project settings :
You should try moving / deleting these files :
YourProject.xcodeproj/<USERNAME>.*(if I remember well,
.pbxuser/.perspectivev3files keeps tracks of stuff like opened files… and windows sizes…)