What's their keyword hit algorithm? Any two words, or any two words that must be adjacent to each other? Most search engines run on the former, in which case "go programmer" is going to match "We're looking for a programmer who's a go-getter, someone self-motivated and willing to take on extra assignments" and "Go grab the job of your dreams and be a programmer with us" and "You've been the go-to person that other people at your firm look up to."

Best way I can think of to overcome this is search for "golang" [1], but that's going to undercount by a lot. I think really you can't draw any conclusions from free-text search engines.

[1] http://www.jobdensity.com/QueryGrid.aspx?q=913&t=golang