Perhaps you should try some spelling variations:
yang thanh » long thanh, van thanh
wang yang » wang yan, wang liang, wang yanling
wing john » king john, wong john, wrong john
thanh vu » thanh van, thanh _
vu irene » _ irene
wong sam » wong sau, wong lai, von sam
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 yang thanh vu irene wing john ((wong sam) or (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang thanh vu irene wing john ((wong sam) OR (kong sar)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yang thanh vu irene wing john ((wong sam) or (kong sar)) ;*.