Perhaps you should try some spelling variations:
wang wang » wang liang, wang yan, wang yong
wang yang » wang yan, wang liang, wang yanling
yang john » young john, king john, yang jin
john wong » john song, john bonn
vu irene » _ irene
wong sam » wong sau, wong lai, kong sar
tuan vu » thanh vu, tuan hua

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