Perhaps you should try some spelling variations:
xiaobo zhang » xiabo zhang, xiao zhang, xiaobo wang
than china » tuan china, han china, wuhan china
gain zhang » bin zhang, yan zhang, gain sharing
wing tan » wing ian, liang tan, hong tan
tuan hua » tan hua, tuan vu, yuan hui
tan chia » tuan china, can china, dan china
zhang ha » zhang han, chang ha, zhang ya

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: wing tan ((tuan hua) OR (((tan chia) OR (than china)))) gain zhang xiaobo zhang ha ;~.
• Adding a wildcard symbol may retrieve word variants: wing tan ((tuan hua) or (((tan chia) or (than china)))) gain zhang xiaobo zhang ha ;*.