Perhaps you should try some spelling variations:
wang kyoung » wang hyoung, hwang byoung, kang young
wang yong » wang yang, wang hyoung, wang yan
yang july » yang judy, yang jui, yang jun
dang hadi » dang hai
yuan dan » yuan kang, yuan wang, yuan kai
dan yang » daun yang, tan yang, wang yang
kang han » kang chen, kong hang, zhang han
xu yuan » xu yan, chu yuan, liu yuan

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 kyoung) OR (wang yong)) xu yuan dan yang july ((kang han) OR (dang hadi)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang kyoung) or (wang yong)) xu yuan dan yang july ((kang han) or (dang hadi)) ;*.