(The operators or symbols used can vary from search tool to search tool, but the concepts are the same.) Doing that usually involves putting parentheses, quotation marks, and Boolean operators (AND, OR, NOT or their symbols) in specific places in the search statement. When a search requires the use of more than one Boolean operator, use parentheses to group the terms with each Boolean. (When using some search tools, use AND NOT before the term.) Using Parentheses with Multiple Operators This is commonly done with NOT or the use of the Minus (-) sign. For example if we were looking for information about illegal drug use we would want to exclude prescription drugs from the search results. NOT – If the main idea has a common use you want to exclude, use NOT to exclude that word. ![]() In the previous example of Latino small business growth, we would want to also use the term Hispanic. Most search tools search for all terms (AND) by default, so you need to use the term OR between terms to let it know you want to find any of the terms. OR – If the main idea has several synonyms, use OR to combine them. That’s what automatically happens in search engines such as Google and Bing unless you tell them to do something different by using OR or NOT. ![]() To look for information about spiders as signs of climate change you’ll want to have both terms in the search and are performing an AND search. The Boolean operators AND, OR, and NOT exclude or include subsets of sources.ĪND – If the main idea contains 2 or more ideas, you’ll want to use AND to combine them.
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