I thought it was some kind of error or maintenance, but it isn't. You can't search for the Ys games in the search option and I think I know why.
You can submit a new game that is less than 3 letters, however, it appears this applies to the search option as well. I can put any 3 letters and it'll give me a result but anything less will not result in anything.
Perhaps this is only useful for the Ys games as that is the only series I can think of that is less than 3 letters, but I just want to do a general search of the games, nothing specific.