Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
jia zhang » jie zhang, jia zhangke, xiao zhang
zhang hai » zhang dai, shang hai, zhang han
wing ian » wing tan, twinn ian, wing sun
dan yang » daun yang, tan yang, wang yang
yang jia » yang jie, yang jin, yang jing
han hua » tan hua, tuan hua

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 ian ((((han hua) OR (wang hua))) OR (wuhan china)) dan yang jia zhang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wing ian ((((han hua) or (wang hua))) or (wuhan china)) dan yang jia zhang hai ;*.