Select the most important 2-3 terms related to your topic. Put the word AND between each new term; this tells the database to look for resources with ALL your terms.
U2 AND religion
Use quotation marks ( " " ) around phrases (two or more words); this tells the database to look for the words in that specific order.
"civil war" AND music
Use an asterisk ( * ) to find multiple endings of one word. Using censor* as a search term will include results that refer to censor, censors, censored, censoring, and censorship.
censor* AND Shostakovich