Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
wang yong » wang yang, wang hyoung, wang yan
yang jin » yang jun, ying jin, shang jin
yang jie » yang di, yang xi, yang yi
yang jui » yang judy, yang di, yang xi
yan hua » tan hua, ya hua, wang hua
won sau » wong sau, wong sam, wong siu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong ((yan hua) or (than china)) gene ((((yang jin) or (yang jie))) or (yang jui)) won sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong ((yan hua) OR (than china)) gene ((((yang jin) OR (yang jie))) OR (yang jui)) won sau ;.
• Adding a wildcard symbol may retrieve word variants: wang yong ((yan hua) or (than china)) gene ((((yang jin) or (yang jie))) or (yang jui)) won sau ;*.