Hello,
Please check related forum posts, this question was raised multiple times:
https://www.wix.com/corvid/forum/corvid-tips-and-updates/example-multiple-groups-filter
https://www.wix.com/corvid/forum/community-discussion/multiple-filters
https://www.wix.com/corvid/forum/community-discussion/filter-collection-by-multiple-fields
https://www.wix.com/corvid/forum/community-discussion/reverse-filter-multiple-filters-overlapping-filters
https://www.wix.com/corvid/forum/community-discussion/filter-dataset-with-2-filters
https://www.wix.com/corvid/forum/community-discussion/multiple-filters