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information retrieval |
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finds documents containing 'information' or 'retrieval' |
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information
or retrieval
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finds documents containing 'information' or 'retrieval' |
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information and retrieval |
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finds
documents containing both 'information' and 'retrieval'
in the same document |
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information and
not retrieval |
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finds
documents containing the word 'information' but not containing
the word 'retrieval'
in the same document |
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information and retrieval and
not
data |
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finds
documents containing the words - 'information' and 'retrieval'
in the same document but the document may not contain the word 'data' |
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information and retrieval and
data |
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finds
documents containing all three words - 'information' and 'retrieval'
and 'data' contained in the same document |