Perhaps you should try some spelling variations:
yang guang » yang yang, yang liang
wang xuan » wang xiuyan, wang xueman, wang yuhan
yang john » young john, king john, yang jin
john wong » john song, john bonn
yan guan » gan guan, yan yuan, yihan guan
vu irene » _ irene
wong sau » wong sam, wong siu, wong shiu

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