The use of parentheses may remind you of the mathematical statements written in math courses. The reason parentheses are necessary in searching is that search tools, including Google, generally perform their operations from the left to right of a search statement. If you are using multiple Boolean operators, then the way to make sure that the search is done as a whole statement requires that you use parentheses to combine the sets in your statement.
Can you tell that the searcher wants to find information about either treatment or therapy for either cats or dogs?
Anything found with the latter statement without parentheses would have had to be about both— not just either—therapy and treatment for both—not just either—cats and dogs. So the latter statement would have turned up fewer pieces of information. Take some time to practice searching precisely — start by identifying main concepts, then listing related and alternative terms with the help of wildcard and truncation symbols , and finally constructing search statements. Search Terms — Open activity in a web browser.
Truncation — Open activity in a web browser. Search Statements — Open activity in a web browser. More Search Terms — Open activity in a web browser. More Truncation — Open activity in a web browser. More Search Statements — Open activity in a web browser.
Skip to content 4-Precision Searching. Activity: Wildcards and Truncation Open activity in a web browser. Example: cats OR dogs AND treatment OR therapy Can you tell that the searcher wants to find information about either treatment or therapy for either cats or dogs? Activity: Search Analysis Open activity in a web browser.
The techniques described in this section will enable you to quickly retrieve relevant information from the thousands of records in a database. When you search a database and do not get the results you expect, Ask Us for advice. Library staff are happy to help you find what you need. Ask Us Ask a question, make an appointment, give feedback, or visit us. It looks like you're using Internet Explorer 11 or older.
This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results. Database Search Tips: Overview Learn strategies on effective database searching for best results.
Overview Boolean operators Truncation Keywords vs.
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