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SAMPLE SEARCHES

 

information retrieval

finds documents containing 'information' or 'retrieval'

 

information and retrieval

finds documents containing both 'information' and 'retrieval'

information not retrieval

finds documents containing 'information' but not 'retrieval'

 

web*

finds documents containing words starting with 'web'. Also finds documents containing the word web since w-e-b are the first three letters of the word 'web'.