To search for specific phrases, enclose them in quotation marks. The database will search for those words together in that order.
("social media" or Facebook or "online social network*") AND privacy AND "facial recognition"
Join together search terms in a logical manner.
AND - narrows searches, used to join dissimilar terms
OR - broadens searches, used to join similar terms
Facebook AND privacy
“social media” OR Snapchat OR "online social networks"
("social media" OR Facebook)
Truncate a word in order to search for different forms of the same word. Many databases use the asterisk * as the truncation symbol.
Add the truncation symbol to the word network* to search for network, networks, networking, etc.
You do have to be careful with truncation. If you add the truncation symbol to the word minor*, the database will search for minor, minors, minority, minorities, etc.