Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
yuan kang » yuan wang, yuan chang, chan kang
tuan hua » tan hua, tuan vu, yuan hui
yang hui » yang jui, wang hui, yang muxi
pang can » pang jun, kang ca, lung can
can hong » tan hong, care hong, wang hong
hong yu » wong yue

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: yuan kang ((than china) OR (((tuan hua) OR (yang hui)))) rene pang can hong yu ;~.
• Adding a wildcard symbol may retrieve word variants: yuan kang ((than china) or (((tuan hua) or (yang hui)))) rene pang can hong yu ;*.