Perhaps you should try some spelling variations:
chen young » chen yong, chen chung, chen dung
chen yang » chen rong
yan yang » yang yang, yao yang, dan yang
song sau » kong sar, song pae, song so
wong sau » wong sam, wong siu, wong shiu
yang yi » yang di, yang xi, yang jui
wang » wing, 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 yan yang yi ((chen young) OR (chen yang)) john ((song sau) or (wong sau)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan yang yi ((chen young) OR (chen yang)) john ((song sau) OR (wong sau)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan yang yi ((chen young) OR (chen yang)) john ((song sau) or (wong sau)) ;*".