Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
chen king » chen ping, chen jing, machen king
john song » john bonn, john ngosong
john wong » john bonn
yan clan » das clan, yan guan, yan yuan
hua chen » jui chen, yu chen, a chen
wang » wan, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or wing) ((yang guang) or (yan clan)) hua chen king ((john song) OR (john wong)) sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wing) ((yang guang) OR (yan clan)) hua chen king ((john song) OR (john wong)) sar ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wing) ((yang guang) or (yan clan)) hua chen king ((john song) OR (john wong)) sar ;*".