Perhaps you should try some spelling variations:
longo john » kong john, wong john
chen longo » chen rong, chen loo, chen yong
song sau » kong sar, song pae, song so
wong sau » wong sam, wong siu, wong shiu
yang yi » yang di, yang jui
yang xi » yang di, yang jui
wang » 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 OR wing) yan ((yang yi) OR (yang xi)) chen longo john ((song sau) OR (wong sau)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wing) yan ((yang yi) OR (yang xi)) chen longo john ((song sau) or (wong sau)) ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wing) yan ((yang yi) OR (yang xi)) chen longo john ((song sau) or (wong sau)) ;*.