Add more searchable fields on RB mobile app

Right now, even with all categories added including Genre, BPM etc..... When I search, it only displays the results for Artist, Album, and track. Is there a way to be able to search Genre? again, I know how the apps work and I have added the categories to do so but they still don't work on the app. 

For example, I had someone ask for a ballroom type dance at an event, I could easily search "Ballroom" to list all my stuff in RB on my laptop but I cannot do this on my iPad. 

can this be added or is it limited due to space requirements?

thanks!