Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang tuan » yang guang, yang dean, yang fan
hua irene » hua ren
yang john » young john, king john, yang jun
kong sara » kong sar
tuan hua » tan hua, tuan vu, yuan hui
yang jin » yang jie, yang jun, ying jin
wong sau » wong sam, wong siu, wong shiu

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 tuan hua irene ((yang john) OR (yang jin)) ((wong sau) or (kong sara)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang tuan hua irene ((yang john) OR (yang jin)) ((wong sau) OR (kong sara)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang tuan hua irene ((yang john) OR (yang jin)) ((wong sau) or (kong sara)) ;".
• Adding a wildcard symbol may retrieve word variants: wang yang tuan hua irene ((yang john) OR (yang jin)) ((wong sau) or (kong sara)) ;*.