I think this could be fixed by making the following search work:
blahblahblah is:answer hasaccepted:no score:0
currently if you use is:answer
and hasaccepted:no
you get questions, instead of answers that are on a question that doesn't have an accepted answer (probably bad behavior)
if you use is:answer
and score:0
you get 0-score answers, but the questions they're attached to might have other answers with higher scores (probably good behavior)
but you really want the questions, not the answer, so
My simple idea would be to have a filter ascore:#
that would filter questions based on the highest answer score, 0 being only 0-score answers, and any other number being the minimum amount of what the answer is scored (just like the current score:#
filter
So then this search would work:
blahblahblah hasaccepted:no ascore:0