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Search Operators and Boolean Search Queries

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Table 1. Search Operators and Boolean Search Queries.

OperatorDescriptionSample Usage
" " (1)Quotation marks. Use quotes to search for an exact word or set of words.

"Offline mailbox"

"Booking tonight"

+/-

Plus/minus sign. Common words are ignored and are not searched by default, for example, "which" and "that" are common words. Add a + or - to a common word to include the word in the search.

Search that include common words such as which, page, that,

+which
ORAllows results where at least one of the terms appears in the message. Generally used to join similar or synonymous concepts. The more words connected by the OR the more messages that are returned.

Offline OR Tonight OR Mailbox

"Double Glazing" OR "Glass Window"

ANDApplied by default except when using other boolean operators within a set of parentheses () or phrases."Global warming" AND "CO2 Emissions" and (London or "West Coast")
NEARRequires the terms to be within 10 words of each other in either direction. Use the NEAR operator when you require that certain terms appear in the same sentence or paragraph of the document.Network NEAR deployment
( )Parentheses. Requires the terms and operations that occur within the parentheses to be searched first. Use parentheses to group terms joined by OR when there is any other Boolean operator in the search.

"Global warming" AND "CO2 Emissions" and (London or "West Coast")

Requires the first two terms somewhere in all messages and either London or West Coast.

 

"Global warming" AND "CO2 Emissions" and (London or "West Coast")

Requires CO2 Emissions to be within 10 words of Global warming; the rest can be anywhere in the messages. The parentheses guarantee that the effect of NEAR stops with Global Warming.

Note:
(1) Quoting an expression requires standard double-quote characters, which are shift-apostrophe on an American keyboard, or shift-two on a British keyboard, character code 34. If smart quotes (such as those generated by Microsoft Word) are used, they are not treated as delimiting a quoted expression, and instead are treated as characters on which to search.