Perhaps you should try some spelling variations:
wang yang » wang liang, wang yanling
wang hong » wang yong, wang hyoung, wang lihong
john wong » john song, john bonn
chen yan » chen yang, chen tan, chen yun
yan john » ryan john, gain john, tian john
wong sar » kong sar, wong sam, wong sau
yang yi » yang xi, 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: ((((wang yan) OR (wang yang))) OR (wang hong)) ((yang yi) OR (yang di)) chen yan john wong sar ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wang yan) or (wang yang))) or (wang hong)) ((yang yi) OR (yang di)) chen yan john wong sar ;~".
• Adding a wildcard symbol may retrieve word variants: ((((wang yan) or (wang yang))) or (wang hong)) ((yang yi) OR (yang di)) chen yan john wong sar ;*.