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NEAR narrows search compared with the AND operator. "Sustainable
Development"NEAR safety will find only those documents
that mention "safety" near to the two words "sustainable
development" together.
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OR limits any documents to any words in any order. Sustainable
OR Development will return documents containing the
word "Sustainable" or "Development" or both. This is the
default operator for most engines. So if you want something
different you will have to put in AND etc.
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