That's pretty awesome, and it works exactly the same way in Chrome.

I just modified the concept for my own use by making a custom search engine for

  https://www.google.com/search?btnI=lucky&q=%s+site:developer.mozilla.org+docs

linked to the keyword "mdn".

So I can type "mdn settimeout" or "mdn border radius" and I'll be taken to the respective pages!