I'll do a search, and background-open all of the results that seem responsive as I skim them, to read in depth once I think I've found "enough". Most of them of course get closed quickly upon ... uh, tabbing to them, because they weren't as material as I'd thought from the summary.
Then, sometimes (read: often), I'll recurse.
This way, in my experience, I tend to find more (as in quantity) relevant info, from which I can sieve quality of info, than if I were to serialize my search, going depth-first.
YM, as always, MV.