NEAR indicates that two or more words or phrases (can be used with other Boolean commands above) must appear near one another on a web page.
GOOGLE BOOLEAN SEARCH NOT WORKING PLUS
Some search engines will assume automatic truncation and search on the root plus endings.Ī query for theat* might help find searches for theatre or theater or any plural forms of either word. * (wild card or truncation - no spaces around asterisk) + Elvis -Costello: This will request Elvis, but exclude anything on Elvis Costello.ħ. Use this to exclude pages containing a particular word. Marks words that cannot appear in any Web page on the results list. Google and Yahoo use a minus sign (-) in place of the command NOT.
(minus sign - no space before first letter) Understanding how boolean operators work is important for search engine optimization. + Elvis Presley: This will require that Elvis appears, but Presley will be a request.Ħ. Ithaca College Library in the US uses ice cream to illustrate how Boolean Operators work 7. If there is no plus sign, the word can be considered a request, not a requirement (particularly if there is a string of words) Boolean logic uses the terms AND, OR and NOT to combine concepts. Use it to mark words that must appear in each Web page. + (plus sign - no space before first letter) For some engines, it must be used with AND or OR. A boolean search uses two or more search words and typically requires both to be found (AND) or any one to be found (OR). Is used much like the minus sign to exclude words. NOT searches: Type the word NOT (capital letters) immediately before a search term to exclude it from your search results. This is a good way to connect synonyms or alternate spellings. (Notice that the quotation marks are also used below Boolean Search commands can be used together to maximize their effectiveness.)Ĭonnects two or more words, at least one of which should appear on each Web page returned by the query. Most (but not all) search sites assume this operator by default. In contrast, the query, China Cat Sunflower (without quotes) might return pages containing the words China, cat, and sunflower not necessarily in that order.Ĭonnects two or more search terms all of which must appear on each web page on the results list. "China Cat Sunflower" will return a list of Web pages containing that exact phrase. Without quotation marks, the search engine may assume that the phrase is a list of separate query terms. Boolean logic commands are accepted by most search engines and searchable data bases to help the researcher search more efficiently.
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