Logged in to echo this. Why on earth would I want a search made within a game's subdomain to search all other games, let alone users and various stuff that has nothing to do with actual mods?
On top of which, only showing the first six (?) results and requiring another click to view all, then needing to re-sort them, is a huge waste of time.
Default search should be mod search with expanded results. This is going to comprise the vast majority of your search traffic in-site. The other stuff should be accessible via a click, not fed to the user by default.