Perhaps you should try some spelling variations:
yuhan kang » yuan kang, chan kang, yuhuan huang
wang yuhan » wang luhang, wang yan, wang yidan
wing ian » wing tan, twinn ian, wing sun
jin song » jie song, john song, jin ying
kim song » kim young, kim eung
dong di » dong sin
m shah » m shahe, d shah

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: ((wing ian) OR (dong di)) wang yuhan kang ((jin song) OR (kim song)) m shah ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing ian) or (dong di)) wang yuhan kang ((jin song) OR (kim song)) m shah ;~".
• Adding a wildcard symbol may retrieve word variants: ((wing ian) or (dong di)) wang yuhan kang ((jin song) OR (kim song)) m shah ;*.