For example:Įxcept as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For example: src:įind pages that contain images of a specific dimension. The related: search operator is not a good tool for debugging specificįind pages that reference a particular image URL. Refreshed real time, so recent popular URLs might not show up in results for the Moreover, the data that powers the related: query operator is not Of URLs is generally only calculated for the most popular URLs on the internet. Indicator of the quality of your pages, nor any other search signal. The lack of your URLs showing up for related: queries is not an Google determines the relatedness of URLs by comparing multiple factors, such as theĮntities mentioned on the page and the general category of the page. For example: cache:įind pages that are related to a specific URL. For example:įind the cached version of a page. Tool in Search Console is more reliable for debugging purposes.įind search results from a particular domain, URL, or URL prefix. Your website, and the image search imagesize: operator may be helpful to findīecause search operators are bound by indexing and retrieval limits, the The following search operators may also beįor example, the site: search operator may be useful to monitor comment spam on If you don't put in the parentheses, the search statement is processed strictly from left to right, so that the AND is done first. This search strategy will retrieve records containing both of the concepts, Diet Therapy + Bulimia, or any records with the concept Anorexia.That you can use to refine or target your searches. For example, diet therapy AND ( bulimia OR anorexia ) will retrieve records containing the two concepts, Bulimia + Diet Therapy, or the two concepts, Anorexia + Diet Therapy, or records that contain all three concepts, Bulimia + Diet Therapy + Anorexia. Searches within parentheses are performed first and operations proceed from left to right. The order in which the operations (AND, OR, NOT) are processed can vary between systems. Use parentheses ( ) to separate keywords when you are using more than one operator and three or more keywords. Nesting, or mixing the Boolean operators, is a way to combine several search statements into one comprehensive search statement. For example, you could search multi-infarct dementia by using Dementia NOT Alzheimer's.īut be careful using this because you would eliminate records discussing both types of dementia, as all articles discussing Alzheimer's are eliminated. The final Boolean operator NOT allows you to exclude concepts not relevant to your search. The more concepts or keywords you OR together, the more records you will retrieve. For example, kidney disease OR renal diseases will retrieve citations using either (or both) terms. This expands your search by retrieving citations in which either or both terms appear. The Boolean operator OR allows you to broaden a concept and include synonyms. The more concepts you AND together, the fewer records you will retrieve. For example: "Does taking aspirin cause Reye's Syndrome in children?" This will retrieve citations that discuss all three concepts in each article. When terms/concepts are combined with the AND operator, retrieved records must contain all the terms. ![]() (The shading represents the outcome of the Boolean operation.) The circle diagrams that help illustrate the relationships between the sets used in Boolean logic were named after another mathematician, John Venn.
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