Use Boolean Operators to string keywords (mostly in the form of nouns). These operators are AND, OR and NOT.
The Boolean operator AND gives a very specific result.
Hamlet and criticism will give you material on criticism or interpretation or insight into the play Hamlet – in other words secondary material on the play Hamlet.
The Boolean operator OR must be used for synonyms or similar words.
(drugs or narcotics)
-Zoom in or out = search under the bigger or the smaller picture too. If you need information on specific drugs, name them.
“South Africa”, “Third World”, “Developing countries”, “integrated marketing communication”, “Cartesian philosophy”, etc. are examples of phrases.
(IMC or “Integrated marketing communication”)
(“South Africa” or “Third world” or “Developing countries”) and HIV
To find more hits one should include the singular and plural form of keywords and one would also find other applicable forms of the words. Use an asterisk after the stem of the word:
Universit* would render information on university and universities.
Brand* would render information on brand, brands and branding. But also on brandy. (You may get a surprise when you see your results and often it has to do with the retrieval of a form of a word with which you did not reckon!)
Instead of searching for (Globalisation or globalization) you could use the wild card ? which stands in the place of one letter.
Globali?ation and poverty
Your librarian will show you how to string the keywords or words under which you want to search together. These searches can be repeated on other databases too.