How does Fluther search work?

A search for ice turns up a lot of seemingly non-icy topics.

So my guess is that it’s doing some form of a substring search, hitting on nice, licorice, etc.

And I’ve never had much luck with quoted terms, like ”iphone sdk” whereas searching without the quotes works pretty alright.

Are there any guidelines to Fluther search? Or should I just revert to using the “site:fluther.com” directive on Google?