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Before you start searching for literature for your review, first brainstorm your area of interest to identify relevant subject keywords that describe the topic. This process, which is known as Topic Analysis, helps you clarify the topic and break it down into subject keywords. You will use these keywords when searching for information, such as journal articles, books, policies, statements and webpages most relevant to your topic.
Watch the Topic Analysis video below for more info:
How to do a topic analysis
Find additional keywords
Write down the key concepts from your topic and have a go at brainstorming as many alternative keywords and phrases as possible.
Synonym.com or other dictionaries, such as Oxford Reference can help you get alternative keywords.
Thinking about your topic in this way forces you to describe your topic in "other words", which will provide you with some useful keyword alternatives as well as help you to cement your understanding of the topic.