Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
john song » john wong, john bonn, john ngosong
yong john » young john, kong john, wong john
chen yong » chen rong, chen yang, zhen yong
hua chen » jui chen, yu chen, a chen
song sam » wong sam, kong sar, song pae
gan guan » yan guan, quan guan, fan guon
yan yuan » yan guan, fang yuan, yan clan
nan yan » nan ya, wang yan, qian yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((((yang guang) or (gan guan))) or (((yan yuan) or (nan yan)))) hua chen yong john song sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((((yang guang) OR (gan guan))) OR (((yan yuan) OR (nan yan)))) hua chen yong john song sam ;.
• Adding a wildcard symbol may retrieve word variants: lang ((((yang guang) or (gan guan))) or (((yan yuan) or (nan yan)))) hua chen yong john song sam ;*.