Perhaps you should try some spelling variations:
yan guang » yang guang, yan guan, gan guan
guang hua » wang hua, gang hu, guang eu
hua irene » hua ren
wong john » wrong john, kong john, longo john
lang yan » wang yan, wang yang, zhang yan
wong sau » wong sam, wong siu, wong shiu
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: lang yan guang hua irene wong john ((wong sau) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan guang hua irene wong john ((wong sau) or (kong sar)) ;*.