How does Search work in Google Calendar synch


I’m trying to pull Google Calendar events into my Coda table so I can use it as a driving distance administration. So I am only interested in Events with a real Location (city, adresss) and I would like Synch to ignore Events where Location is empty or contains the words “Hangout” or “Call”.
The “add search criteria” in the Calendar Synch action suggests that you can use a normal formula. But I can not get that Formula working. Any advice?