I had need of finding projects that had a particular words in the track titles.
I set the windows search to index properties and file contents.
Just tried it with Content: sonitus, rig, span, boost, z3ta. (one word at a time)
To be sure it was not just finding track names, I just created a new project, added z3ta, changed the track names to not include z3ta, saved and the file manager immediately listed it in the found window.
Until the CW dudes add such summary info about projects this may help.
Most all files are indexed for at least basic properties. And I know for some having the windows indexer running is bad bad. But I use it for all kinds of stuff for writing stories and lyrics using word and excel.