Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yan
wang tuan » wang xuan, wang yuhan, wang hua
yang john » young john, king john, yang jin
kong john » king john, wong john, longo john
vu irene » _ irene
wong sam » wong sau, wong lai, von sam
tuan vu » thanh vu, tuan hua
sar » sara, star, saur

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang tuan vu irene ((yang john) or (kong john)) ((wong sam) or (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang tuan vu irene ((yang john) OR (kong john)) ((wong sam) OR (kong sar)) ;.
• Adding a wildcard symbol may retrieve word variants: wang wang tuan vu irene ((yang john) or (kong john)) ((wong sam) or (kong sar)) ;*.