Perhaps you should try some spelling variations:
yihan guan » yan guan
yan liang » yang liang, wang liang, you liang
yang john » young john, king john, yang jin
john wong » john song, john bonn
yan xuan » yan guan, yan yuan, wang xuan
vu irene » _ irene
wong sam » wong sau, wong lai, kong sar

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 ((((yan xuan) OR (yihan guan))) OR (yan liang)) vu irene yang john wong sam ;~.
• Adding a wildcard symbol may retrieve word variants: wing ((((yan xuan) or (yihan guan))) or (yan liang)) vu irene yang john wong sam ;*.