Perhaps you should try some spelling variations:
yang john » young john, king john, yang jin
kong sara » kong sar
yan tuan » yan guan, yan yuan, anh tuan
vu irene » _ irene
wong sam » wong sau, wong lai, kong sar
wan yan » wang yan, nan yan, wai yan
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: wan yan tuan vu irene yang john ((wong sam) or (kong sara)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan tuan vu irene yang john ((wong sam) OR (kong sara)) ;.
• Adding a wildcard symbol may retrieve word variants: wan yan tuan vu irene yang john ((wong sam) or (kong sara)) ;*.