It seems many of the questions here end up closed. Having most of my searches consist largely of closed questions makes finding questions I can answer even harder and more tedious. (Rarely will will a title tell me if I can answer a question or not. I need to know the details inside)
When using the site search, you can search for questions with the
is:q operator and for non-closed questions with
By itself, that isn't really useful, but of course you can add tags (e.g.
[biology]) or other search terms in the mix.