A lot of responses will be about "there's no result for x". You're right, there isn't nearly as much content on the site as I'd like there to be!
The content is actually hand written, and as of right now focuses on the very basic programming fundamentals common across all of the languages. The plan is to triple the amount of content in the database (adding DS, special classes, parsing, etc.), and eventually open up the database to outside contributions.
Additional languages are coming too!