There are a number of resources you can consult for your literature review:
Before you start searching the literature, it is important to develop a robust search strategy. This will assist in eliminating irrelevant results.
The following points outline the steps to follow:
The below forms can be used to plan your search strategy and record your searches.
It is often a requirement when publishing your research, that you record which datababases and other resources you searched and the search terms that you used. For an example of this see page 103 of the following article: http://dx.doi.org/10.1211/ijpp.14.2.0003.
Boolean operators are terms that help you to either narrow or broaden your searches in library catalogues and databases. They are the words 'AND', 'OR', 'NOT', typed between your search terms.
Narrows your search. Find results containing both of your terms.
For example, you would find resources containing both apples and oranges.
Broadens your search. Find results containing either one or both of your terms.
For example, you would find resources containing either apples or oranges, as well as those containing both terms.
Excludes a term from your search.
For example, you would exclude results containing the term oranges.