Perhaps you should try some spelling variations:
hyoung wang » kyoung yang, hong wang
wang yuhan » wang luhang, wang yan, wang yidan
yuhan ming » yuan ming, chan ming
ming yang » ying yang, wang yang, yang yang
zhang han » zhang fan, zhang yan, zhang hanmo
xi zhang » li zhang, xiao zhang, bin zhang
yang xi » yang di, yang yi, yang jui

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: ((wan OR lang) OR wing) hyoung wang yuhan ming yang xi zhang han ;~.
• Adding a wildcard symbol may retrieve word variants: ((wan or lang) or wing) hyoung wang yuhan ming yang xi zhang han ;*.