Perhaps you should try some spelling variations:
fang yuan » wang yuhan, wang yan, meng yuan
kang chen » chang chen, jane chen, tang chun
yong john » young john, kong john, wong john
john song » john wong, john bonn, john ngosong
song thin » song shin, song jin, song min
kang han » kong hang, zhang han, dang hai

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 wing) OR lang) fang yuan ((kang han) OR (kang chen)) yong john song thin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wan or wing) or lang) fang yuan ((kang han) OR (kang chen)) yong john song thin ;~".
• Adding a wildcard symbol may retrieve word variants: ((wan or wing) or lang) fang yuan ((kang han) OR (kang chen)) yong john song thin ;*.