That's not correct by any means - not an accurate way to search. I can't believe you actually thought that was accurate.
Your profile says you have a Z10 - I suggest you look up apps in BlackBerry World on your device and tell me what you see. The apps and games are listed separately. The on device search for a Z10 won't show apps that don't work on BB10.
I searched calories today and there are 155 apps listed; searching diet brings up 919 apps. When I search maps, there are 6,599 results. There are over 800 clock apps, and so on, and so on....