Searching groups by title isn't very useful. Instead if we consider the tags of a group to be the union of tags of all the posts in the group, we can run a tag based search from these tags instead.
If the search is too slow we could use another auto-generated table "group tags" that precalculates all the groups tags.
An alternative for the time being is using the usual search with the "Groups" sort mode.
Searching groups by title isn't very useful. Instead if we consider the tags of a group to be the union of tags of all the posts in the group, we can run a tag based search from these tags instead.
If the search is too slow we could use another auto-generated table "group tags" that precalculates all the groups tags.
An alternative for the time being is using the usual search with the "Groups" sort mode.