Multi tag search?

I recently have not been able to muti tag seach it now always says no results found?
I know im spelling the tags right. have we changed/removed multi tag search?

I thought it was "tag tag" but i cant get it to return any results?

Edit: matter of fact searching in general doesnt return any results?
Am i being completly oblivious to something?
To get a result i have to type in the search box, wait for the search help to pop up, and click the pop ups but those are tag/author/story pages and not a search page

I cant get any search to return any results.
Multitag or single tag seaching.
even: vanilla , +vanilla , vanilla oppai , +vanilla +oppai , +vanilla+oppai , vanilla+oppai ,

So "search" in general is just busted.....,hrmmmm
clicking on the single tag themselves/everything on the top bar, is the only way to navigate the site?