Perhaps you should try some spelling variations:
than china » han china, wuhan china, can china
tuan china » wuhan china, can china, taiwan china
wang kang » wang liang, wang yan, wang yong
wang yang » wang yan, wang liang
dang hari » dang hai
yang li » yang lin, yang di, yang xi
li dang » le dang, li gang, li wang

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: ((wang kang) OR (wang yanling)) ((than china) OR (tuan china)) wang yang li dang hari ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang kang) or (wang yanling)) ((than china) or (tuan china)) wang yang li dang hari ;*.