There is no system like the Library's Boolean Keyword or Guided Keyword to help you.
Search engines locate sites by a variety of methods.
The number of hits you receive for a search can be tens or hundreds of thousands - way too many to sift through. This means that you need to be creative in your search strategy and you should use two or more search engines. Your aim really is to find a reliable site with a lot of links so you can continue your research from there. In this exercise we are going to look at results from different search engines and compare them to each other. Your instructor will assign a topic or have you use a topic you choose.