Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
liang tan » liang dan, liang sun, wing tan
thanh van » thanh dam, thanh vu
jui zhang » li zhang, jia zhang, jie zhang
zhang hai » zhang dai, shang hai, zhang han
tan yong » tan hong, tan kong, tan yang
yong jui » yang jui, yang jun, yong cai

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: liang tan ((thanh van) OR (tuan china)) tan yong jui zhang hai ;~.
• Adding a wildcard symbol may retrieve word variants: liang tan ((thanh van) or (tuan china)) tan yong jui zhang hai ;*.