The original comment was about Apple's App Store. I assume there are financial ways to get your App "featured" there or something like that but as far as I know, you can't financially take direct influence on whatever logic Apple uses to sort search results there. Yet, it can still be spectacularly difficult to find an App - even if you type in its exact name, as indicated by OP (can confirm from my experience).

If you have a theory about what Apple's motivation to actively serve such bad results could be, I'd be interested to hear it. I've always sort of assumed that the root cause for this is some combination of neglect on Apple's part and attempts at gaming the system by developers (I don't know much about developing for the App Store, but I presume there are forms of SEO-like activities that can be done in attempts to bump up your app).

Most ad sales platforms have auctions for ad slots and/or keywords. If you want to game the system and have money to burn as growth hacking, you can place a larger value in those auctions/keywords to win a chance at your ad being placed in front of more eyeballs. When it comes to apps/games especially, people will chose whatever is posted from laziness, fomo, or just tired of looking and picking the easy route. I suspect that when you get an unrelated ad to your search, it's because someone else was willing to spend more money for those search terms than someone with more relevant matches. It's always going to be about those Benjamins.