Perhaps you should try some spelling variations:
china als » china aus, china aids, china air
yang july » yang judy, yang jun
long van » cong van, long han, duong van
van hung » men hung, van long
yang jui » yang judy, yang di, yang xi
wang hui » wang hua, wang zhi, wang wei
yang yi » yang di, yang xi

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: long van hung ((china a) OR (china als)) ((((yang jui) OR (yang yi))) OR (yang july)) wang hui ;~.
• Adding a wildcard symbol may retrieve word variants: long van hung ((china a) or (china als)) ((((yang jui) or (yang yi))) or (yang july)) wang hui ;*.