Even Google searches can benefit from the use of Boolean operators. Discovery tools and most scholarly indexes and databases support Boolean searching. Using Boolean operators helps give you more control over your search and yields more relevant search results. In the above example, you would eliminate any records about using computers to learn languages, even though those items might be useful. NOT must be used carefully, though, because you might eliminate results that could be useful, even though they contain your NOT term. This search will retrieve records with the term languages, as long as those records do not also include the word computer. For example, searching on dengue AND malaria AND zika returns only results that contain all three search terms. AND searches find all of the search terms. In this example, you’re not interested in computer languages and want to filter this term out of your results. There are three basic Boolean search commands: AND, OR and NOT. Note that in Quick Search’s Simple interface, you must capitalize Boolean NOT for it to be recognized.Īn example of this is languages NOT computer. This is a useful way to prevent irrelevant or unwanted records from being retrieved. NOT will find records containing the first term/phrase but not the keyword(s) following the NOT. NOT is used to restrict a keyword search. Note that each of the Booleans can impact your search results in different ways. The Boolean operator we would want to use to connect the terms in these two rows is AND. We’ve placed his name in the first row as a Subject, and placed the book title in the second row. The example below shows how you might search for works about Orhan Pamuk’s novel, My Name is Red. Scroll past the widget to find the results that match your Boolean search criteria. inurl: is used when you want only one, either of the words, or all of the words in the searched URLs. software engineer NOT job software engineer -job Boolean Search Example: NOT / - operator When searching in Google using this Boolean search string, you may notice a jobs widget. These define how the terms on each row relate to one another. inurl: and allinurl: Both these search operators are helpful in narrowing down the search to only pages with specific text in the URL. The first drop-down menu in that row lists three Boolean operators – AND, OR, and NOT. The second row in Advanced Search allows you to add more terms to your search. Just type out your search terms using the appropriate Booleans.Įxample: philosophy AND history AND mathematics Advanced Search with Booleansįeatures built into Advanced Search help you structure more complex Boolean searches. There are no prompts in Quick Search’s Simple interface to suggest you can use Booleans, but you can. In Quick Search, keyword search terms can be combined with Booleans that help you broaden or narrow your search, depending on which operator you use. The Boolean operators, such as AND, NOT, and OR also work in Google Search and Gmail in an identical way, so I invite you to also check the list of Gmail search operators. 3.7 Boolean Operators Booleans: AND, OR, NOTīoolean operators are connecting words (AND, OR, and NOT) that link two or more keywords or phrases in your search. 7 Basic Bing Search Operators To Use With Bing (& Google) Here are basic Bing search operators that will let you modify and refine your searches.
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