According to the Library of Congress, "Use Boolean operators and nesting to search for combinations of words or phrases. Enter Boolean operators (i.e., AND, OR, NOT) in either uppercase or lowercase when searching." More information can be found on this Library of Congress page.
According to the Ohio University Library website, "Search limiters (sometimes called Filters) are powerful ways to focus your search results so that you don't have to look through lots of irrelevant items to find what you're looking for.For example, many databases include items in foreign languages. If you only want English-language sources, you can use a search limiter to eliminate all other languages.Or if you only want books or only want videos or some other type of material, you can limit your searches that way, too, in ALICE. Or items published within a certain timeframe."
