Get search query set

def search_queryset(self):
        """Get search query set"""
        queryset = self.get_model_class().objects.get_queryset()

        if self.get_model_config().list_select_related:
            queryset = queryset.select_related(*self.get_model_config().list_select_related)

        return watson.filter(queryset, self.get_search(), ranking=False)