As a person searching Monster.com for a recruiter, I rely heavily on saved searches which use a few keywords each. The research on how people search the Internet still shows that most people rely on a few keywords and will scroll through pages and pages of results instead of creating sophisticated search heuristics. Librarians wring their hands over this, but this is reality.
[WS:] And this makes perfect sense. You want to cast as wide a net as it is feasible to search, and then let the human mind decide what has a potential, instead of leaving it to an automated process, which is likely to leave some out less obvious but potentially useful cues.
This is similar to browsing vs. targeted internet searches of music discussed on this list some time ago. Browsing gives you more indirect clues that do not come to the fore in targeted searches, thus giving you a greater chance for serendipitous discoveries.
Wojtek