Mango has a feature called app connect(at 0:40). which makes the user the open the application with data related to bing search query. and the application is opened directly to a specific page which is relate to the search data.
How to enable app connect feature to integrate application to bing search. How does it work..?
MSDN has an article explaing how to do this:
How to: Extend Search with App Connect for Windows Phone
You may also be interested in the Search Extensibility Overview for Windows Phone