Perhaps you should try some spelling variations:
wang yong » wang hyoung, wang yan, wang shiyong
wang yang » wang yan, wang liang, wang yanling
wang hong » wang hyoung, wang lihong, wang heyong
john kong » john king, john song, john wong
hua chen » jui chen, a chen, hua ren
yan john » ryan john, gain john, tian john
yu chen » yu cheng, yi chen, yulu chen
sar » sara, star, saur

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: ((((wang yong) OR (wang yang))) OR (wang hong)) yang ((hua chen) OR (yu chen)) yan john kong sar ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wang yong) or (wang yang))) or (wang hong)) yang ((hua chen) OR (yu chen)) yan john kong sar ;~".
• Adding a wildcard symbol may retrieve word variants: ((((wang yong) or (wang yang))) or (wang hong)) yang ((hua chen) OR (yu chen)) yan john kong sar ;*.