Perhaps you should try some spelling variations:
chang chuan » chung chuan, chen chuan, chang ch'un
chang chen » chang ch'un, change when, chang hee
yong john » young john, kong john, wong john
john wong » john song, john bonn
wong shin » song shin, wong shiu, wong chun
yan yuan » yan guan, fang yuan, nan yan

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) yan yuan ((chang chen) OR (chang chuan)) yong john wong shin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wan or wing) or lang) yan yuan ((chang chen) OR (chang chuan)) yong john wong shin ;~".
• Adding a wildcard symbol may retrieve word variants: ((wan or wing) or lang) yan yuan ((chang chen) OR (chang chuan)) yong john wong shin ;*.