Same problem here too. I have a game called "Unscramble!" and it's impossible to find it with that name. I have scrolled for many pages and can't find it. Meanwhile, many very old apps which haven't been updated in many years are showing in the results.

when i am looking for a specific app on the App Store, I never use the app store to search. I search the web and look for a link to it on the app store. Mostly it's faster that way.