Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
wang wang » wang yang, wang liang, wang yan
yang john » young john, king john, yang jin
yuhan vu » tuan vu
vu irene » _ irene
ying jin » yang jin, jing ji, yang jie
wong sau » wong sam, wong siu, wong shiu

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 yuhan vu irene ((yang john) or (ying jin)) wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yuhan vu irene ((yang john) OR (ying jin)) wong sau ;*.