Quotation Marks: Use quotation marks to search a phrase. Example: "Post traumatic stress disorder"
OR: Use OR to search more than one term. The more terms you connect with OR, the more results you will get. Example: "Post traumatic stress disorder" OR PTSD.
AND: Use AND to connect two different search terms. The more terms you connect with AND, the fewer results you will get. Example: PTSD AND abuse AND adulthood.
Parentheses: Parentheses need to be used when using AND and OR in the same search. Example: ("Post traumatic stress disorder" OR PTSD) AND abuse
