Oh, okay.
I do not really use the app. On a browser I would just click the link and would not need to search the game.
I suspect that the App intentionally disables literal title search. It is too easy to spam known popular words into your title and hope to get found by people looking for better known games. So the search box there only "searches" the most popular games. Search also can dispaly honest and dishonest fan games for a search term with few clues wich is which. (I did see an actual malware fake and an original side by side in search and I also saw the fake indexed, while the original was not.)
One might not be happy with the results of https://itch.io/search?q=baldi as an example for the fan games and clutter that shares a name.