Select the most important 2-3 ideas related to your topic. Put the word AND between each new term; this tells the database to look for resources with ALL your terms.
school AND socialization
Use quotation marks ( " " ) around phrases (two or more words); this tells the database to look for the words in a specific order.
women AND "pay gap"
Use an asterisk ( * ) to find multiple versions of one word. Using ethni* as a search term will include results that refer to ethnic, ethnicity or ethnicities.