Google isn’t the main search engine in a lot of Asian markets.
In Taiwan the market leader is Yahoo, in China it’s Baidu and Korea it’s Naver. Although the basics of search marketing is the same the world over, all engines have their subtle differences. (Especially when it comes to SEO)
If you’re tackling an Asian market, make sure you know the right search engine to utilise and the differences of the market itself. You’ll probably need different payment methods, language, U.X and in some cases a local country IP is a must.