Perhaps you should try some spelling variations:
wang wang » wang liang, wang yan, wang yong
wang yang » wang yan, wang liang, wang yanling
wong john » wrong john, kong john, longo john
john wong » john song, john bonn
tuan hua » tuan vu, yuan hui
tan hua » wang hua, tan chia, tan puay
lai » laid

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 wang) OR (wang yang)) ((tan hua) OR (tuan hua)) irene wong john wong lai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang wang) OR (wang yang)) ((tan hua) or (tuan hua)) irene wong john wong lai ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang wang) OR (wang yang)) ((tan hua) or (tuan hua)) irene wong john wong lai ;*.