Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
wong john » wrong john, kong john, longo john
john wong » john song, john bonn
yan xuan » yan guan, wang xuan, yan clan
yan yuan » yan guan, fang yuan, nan yan
vu irene » _ irene
wong sau » wong sam, wong siu, wong shiu
wang » wing, wan, lang

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 xuan) OR (yan yuan))) OR (yang guang)) vu irene wong john wong sau ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((((yan xuan) or (yan yuan))) or (yang guang)) vu irene wong john wong sau ;*.