Perhaps you should try some spelling variations:
wang yidan » wang yan
kang minah » sang minh
yang hui » wang hui, yang muxi, zhang hui
yang jui » yang judy, yang di, yang yi
song min » song ming, gong min, jong min
cong van » congo can, duong van, cong sun
yang xi » yang di, 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: wang yidan ((((yang hui) OR (yang jui))) OR (yang xi)) a ((song min) OR (kang minah)) cong van ;~.
• Adding a wildcard symbol may retrieve word variants: wang yidan ((((yang hui) or (yang jui))) or (yang xi)) a ((song min) or (kang minah)) cong van ;*.