Perhaps you should try some spelling variations:
wang yang » wang liang, wang yanling
tan chia » tuan china, than china, can china
ren yang » ren yan, chen yang, dan yang
yang jie » yang jin, yang di, yang jui
wong sau » wong siu, wong shiu, wong lai
wong sam » wong lai, kong sar, von sam
tan hua » tuan hua, wang hua, tan puay

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (wang yan)) ((tan hua) OR (tan chia)) ren yang jie ((wong sau) or (wong sam)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (wang yan)) ((tan hua) OR (tan chia)) ren yang jie ((wong sau) OR (wong sam)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (wang yan)) ((tan hua) OR (tan chia)) ren yang jie ((wong sau) or (wong sam)) ;".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (wang yan)) ((tan hua) OR (tan chia)) ren yang jie ((wong sau) or (wong sam)) ;*.