Perhaps you should try some spelling variations:
china chang » chin chang, china zhang, china changqi
than china » tuan china, han china, wuhan china
chang hsun » chang ch'un, chung hsuan, chang su
yan than » van thanh, yan zhang, yan clan
hong hai » shang hai, zhong tai, dang hai
wan yan » wang yan, nan yan, wai yan

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: wan yan than china chang hsun hua ((hong hai) OR ((hong OR long) tan)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan than china chang hsun hua ((hong hai) or ((hong or long) tan)) ;*.