Issues with using Stack Overflow Search Filters for `answers` and `isaccepted` tags

I am trying to search with the Stack Overflow search bar. And write in it:

flutter errors isaccepted:yes answers:1

I didn't get any results.

But I got a lot of results for:

flutter errors   answers:10

Or this:

flutter errors   isaccepted:yes

Is there a problem with the search or I don't know how to use it correctly?