At the moment, you can only add one relation condition. It would be a great advantage if we could be able to create a query search like:
Entitiy type equals Item
Product existing
Web Product Name contains ’Chair’
Resource existing.
At the moment, we can’t add both Product and Resource to the query. And YES - you can setup Completeness rules as a criteria in the query, but the above would be way easier, as we wouldn't have to create completeness rules in control center first.