For search there can be yet another explanation. Unless it was exact title search. (Your games are not indexed, I checked before writing). Results are capped in number. Should be around 60 results.
Search was overhauled awhile ago. Previously you could search your exact profile name and see how many indexed projects you had. Now you can search your display name and your profile name, and the results will include your games, unless your name is a very common word in game titles.