Please try out Yadster and leave your comments/feedback...
Yadster takes feedback from the searcher on which results they like, and then changes the original query to bring them better results.
This is intended to be a workaround for repeatedly changing the query and re-searching for hours in Google, when you are looking for something general.
Ask YC: What do you think of Yadster's search-feedback-update mechanism?
yadster.com