For anyone currently tearing their hair out about the increasing uselessness of Big Search Engine and its offshoots, someone recommended this one to me:
Mojeek are not based on either Bing or Google and are growing their own independent index. Also they recognise that they need to grow to be fully useful, so you can configure buttons at the bottom of each search page to take you to the same search in a mainstream search engine if you don't find what your'e looking for.