What fields should be set in the search.quick method to get only users or only groups?

Question

Classmates

When working with the search.quick method, it is quite convenient to search for users, but it is quite inconvenient to search for groups. The method can only pull out the first thousand responses (10 requests for 100 entities) and in most cases, instead of groups, mostly users and music get. And it turns out that for 1000 answers I get only 5 - 10 groups. I would like to put a flag that users are not needed, but only groups are needed. Moreover, the type of response in each response is (user/group/music). There is no documentation for the method, the scientific poke method did not help either. Maybe someone has already met with this method or knows any analogue for getting groups / users by criterion?