Are you getting too many results? Use AND to narrow your search. This will return any results that contain both words or phrases.
Ex. South Carolina AND history
Not getting enough results? Try OR to broaden your search. This will return any results that have either word or phrase.
Ex. Climate Change OR global warming
Do you have a lot of results with non-relevant information? Try using NOT to eliminate certain words from your results.
Ex. Pets NOT cats