[1.6.x] Fixed backport error in previous commit; refs #15961

                return "%s__icontains" % field_name

        use_distinct = False

        search_fields = self.get_search_fields(request)

        if search_fields and search_term:

        if self.search_fields and search_term:

            orm_lookups = [construct_search(str(search_field))

                           for search_field in search_fields]

                           for search_field in self.search_fields]

            for bit in search_term.split():

                or_queries = [models.Q(**{orm_lookup: bit})

                              for orm_lookup in orm_lookups]