I received an email from one of y’all with some further questions about word groups, head terms, clausal hierarchy and syntax searching.
Rather than writing something, it was easier to make a video to point out some of the different ways one can structure a syntax search — particularly if you’ve wondered what “Must be an immediate child of parent” does.
I’ll warn you that I rambled a bit, the video is almost 13 minutes. Hopefully the information therein is usable.