Perhaps you should try some spelling variations:
wan kyoung » wang hyoung, han kyung, hwang byoung
kang young » wang hyoung
ryang hua » wang hua, yang hui, ying hua
hua rents » hua ren
rents yan » ren yan
hong zhi » zhong zhi, hong ghi, zhang zhi
yan tan » tan tan, yan clan, yan guan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wan kyoung) or (kang young)) ryang hua rents yan tan hong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wan kyoung) OR (kang young)) ryang hua rents yan tan hong zhi ;*.