Perhaps you should try some spelling variations:
yang guang » yang yang, yang liang
john song » john wong, john bonn, john ngosong
yan guan » gan guan, yan yuan, yihan guan
yan clan » das clan, yan yuan
yan john » ryan john, gain john, tian john
song sam » wong sam, kong sar, song pae
hua ren » hua chen
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 guan) OR (yang guang))) OR (yan clan)) hua ren yan john song sam ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((((yan guan) OR (yang guang))) or (yan clan)) hua ren yan john song sam ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((((yan guan) OR (yang guang))) or (yan clan)) hua ren yan john song sam ;*.