AND tells the computer to look for any article or web page that contains both of these words.
AND is the Boolean operator to use when you need to be more specific and/or narrow your search results. |
OR tells the computer that it should look for articles or web pages that contain one or the other (or both) of these words.
Therefore, the computer might find an article that mentions the word UAE, but doesn't use the word Emirates. Or, it might find something that contains the word Emirates, but not UAE. Finally, it might find an article that contains both of these keywords.
OR is the most all-inclusive Boolean operator and is good to use if you are trying to link synonyms or similar ideas and/or expand your search.
Remember:
"OR means MORE" |
NOT tells the computer to find all articles/web pages that contain the keyword Emirates, but to exclude any that also have the word Sharjah.
NOT is the Boolean operator to use if you are trying to exclude certain ideas/keywords from your search. It also narrows your search results.
Here's another example of when you could use NOT: If you wanted to search for information on plants (green, living biological organisms) but you keep getting articles and web sites that talk about power plants, you could use NOT:
plants NOT power
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