
The problem with the popular search engines is that they are popular and the questions asked have been asked by many people before. So, the same information shows up again and again along with the sites that have paid for ranking them at the top. But this is not always true as the top page may be the site with the most links to it. But there is an alternative to the "most popular search engines".
There are literally thousands of search engines and databases and some are very specialized. For example, if you have an interest in mushrooms you can search for "mycology database" and find all sites for fungus and related information. So, use the popular search engines to find the more specialized information by searching for databases and new search engines and expand your horizons. Here is a link to one site with more search engines. Hopefully, this will whet your appetite for better information. Seek and ye shall find...