Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
ping john » king john, kong john, wong john
yan xuan » yan guan, wang xuan, yan clan
yan yuan » yan guan, fang yuan, nan yan
vu irene » _ irene
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: wan ((((yan xuan) OR (yan yuan))) OR (yang liang)) vu irene ping john ((wong sau) OR (kong sar)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan ((((yan xuan) OR (yan yuan))) or (yang liang)) vu irene ping john ((wong sau) or (kong sar)) ;~".
• Adding a wildcard symbol may retrieve word variants: wan ((((yan xuan) OR (yan yuan))) or (yang liang)) vu irene ping john ((wong sau) or (kong sar)) ;*.