QueryExample:
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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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information and retrieval |
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finds documents containing both 'information' and 'retrieval'. |
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information not retrieval |
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finds documents containing 'information' but not 'retrieval' |
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(information not retrieval) and WAIS |
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finds documents containing 'WAIS', plus 'information' but not 'retrieval' |
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web* |
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finds documents containing words starting with 'web' |
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