Yes you can, 

    [harry-potter] views:250 hasaccepted:1
        => 212 results

The issue you are having is that you are using a predicate that searches for _**answers** that are accepted answers(or not)_ : `isaccepted:1` and one that searches for _**questions** that have a minimum number of answers(or no answers)_ : `answers:1`.

It returns no results because there are no answers that are questions, or questions that are answers, so it cant find something that is both _an answer that is an accepted answer (or not)_ **AND** _a question that has a minimum number of answers(or no answers)_.