It suggests that despite its recent growth, Go still has such a low search volume that it barely registers against a language that has practically disappeared from the radar. Combine that with Google's small presence in China and whatever unknown formula they use to normalize popularity in each country, and it could actually be that Go is not significantly more popular in China than in other places. Apparently HHVM is a huge hit in Belgium. http://www.google.com/trends/explore#q=hhvm&cmpt=q&tz=

Or you can conclude that the topics trends beta has a ton of work left to do on it. For instance there's no way golang has more interest than Objective C and Swift put together, but that's what trends beta claims.