There are different strategies that you can use to improve your search results, such as boolean operators, nesting, phrase searching, truncation, and wildcards. Watch these two videos to learn about these search tips and tricks.
Building Search Strings, Part 1: Boolean Operators Video from the Oregon School Library Information System (6:26)
Building Search Strings, Part 2: Nesting, Phrase Searching, Truncation, & Wildcards Video from the Oregon School Library Information System (6:46)