No matter which databases you use to locate materials for your research, there are certain strategies that you can use in designing your searches, which will help you conduct effective searches on your research topic.
AND - combines terms; narrows and focuses search ex.: food and justice
OR - used between synonyms or related terms, broadens search by supplying more options ex.: justice or equity
NOT - excludes terms from search, narrows and focuses search ex.: urban not rural
TRUNCATION - symbol used at end of word or word part to retrieve variant word endings; adds flexibility and depth to your search ex: environment* retrieves: environments, environmental, environmentally, environmentalist, etc.
PHRASE SEARCHING - varies by database, but in many databases it is necessary to put quotes around the phrase: ex.: "climate change"