Try "weiqi" (the correct spelling).

I can't imagine that searches for "go" ever turned up anything useful, though. I'm guessing that most searches regarding Go/weiqi will have something Go-specific in them. "go tsumego" is probably going to give you something useful, regardless of the existance of the Go language. (And if one's searches are still limited to "go", head on over to Sensei's Library [1] until that is no longer a problem, it's a great resource)

[1] http://senseis.xmp.net/

Romanization of Chinese words gives a range of different results, doesn't it? To really disambiguate, we'd need to write 圍棋.

Good point about the searches.

Well, there's really only one official romanization of Chinese, which is Pinyin (in which it would be spelled "weiqi"). The others are obsolete or niche.