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By default the search also finds answers, and since there are no answers attached to those (you cannot answer an answer, after all), it shows them as well. To get rid of them, specifically ask for...
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#1: Initial revision
By default the search also finds answers, and since there are no answers attached to *those* (you cannot answer an answer, after all), it shows them as well. To get rid of them, specifically ask for questions by adding `post_type:1` to the search. Having said that, maybe it would be a good idea if `answers:0` would imply a post type that in principle could have answers attached (AFAIK currently questions are the only post type with that property)