Boolean searching allows you to combine your keywords and related terms with operators such as AND, OR, and NOT to find the most relevant results possible from your search.
AND is used to tell the database that you want it to find all of the terms that it links. If you want the database to find articles that mention both social media and the online classroom, you would link these terms with AND, like this: social media AND online classroom. This NARROWS your search, and is an important concept to remember for when you receive too many items in your search results.