I'm unfamiliar with SQL Search but searching and writing down dependencies... well, I could do almost that well with a couple of queries against sysdepends and a spreadsheet and then searching and dressing my spreadsheet up with manually added entries, no?
Or I could just do the basic dependencies into a spreadsheet, search for EXECs and send that list of stored procs offshore to get a list of further dependencies at $15/hour.
OK... I get that there's no feature in the product to do this, which is a huge disappointment, but there are certainly other dbas out there that have dynamic SQL. "Have you considered using SQL Search?" is a disappointing answer.