Perhaps you should try some spelling variations:
yan xuan » wang xuan, yan clan, yan kun
yan yuan » fang yuan, nan yan, yan clan
yan guan » gan guan, yang guang, yihan guan
vu irene » _ irene
yang jun » yang jui, pang jun, yang jin
jun wong » john wong
wong sau » wong sam, wong siu, wong shiu
wang » wing, wan

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 OR lang) ((((yan xuan) OR (yan yuan))) OR (yan guan)) vu irene yang jun wong sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) ((((yan xuan) OR (yan yuan))) or (yan guan)) vu irene yang jun wong sau ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or lang) ((((yan xuan) OR (yan yuan))) or (yan guan)) vu irene yang jun wong sau ;*.