Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
duong van » cong van, duong anh
van wuhan » van phan
china als » china aus, china aids, china a
yang jui » yang judy, yang yi
lang hua » wang hua, wang hui, dong hua
yang xi » yang yi

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: duong van wuhan china als ((((yang xi) OR (yang di))) OR (yang jui)) ((lang hua) OR (jong ho)) ;~.
• Adding a wildcard symbol may retrieve word variants: duong van wuhan china als ((((yang xi) or (yang di))) or (yang jui)) ((lang hua) or (jong ho)) ;*.