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A more complex example

derivative "intentional phenomenal"~5 -inexistence
Finds documents a) containing the word 'derivative' (or a word with the same stem, e.g. 'derived'), b) containing the words 'intentional' and 'phenomenal' within less than seven words of each other, and c) not containing the word 'inexistence'. At the time of writing this picks out a single paper.

Additional notes

The query must be possible to compute without involving an implicit list of all documents.

Correct query:
aaa -(bbb -(ccc ddd))
Incorrect queries:
aaa | -bbb

More information

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