The above search tells the database that you want all of the articles that contain college AND stress, as well as all the articles that contain university AND stress.
When you use OR, you'll want to put your similar keywords into parentheses, to ensure that the database does not get them mixed up with the keywords you are tying together with AND.
Still not clear on ANDs, ORs and Truncation? Watch the following video tutorial to see them in action!
Porter Campus
1801 Massachusetts Avenue
Cambridge, MA 02140
617-349-8070
South Campus
89 Brattle Street
Cambridge, MA 02138
617-349-8850