Perhaps you should try some spelling variations:
liang yuhan » wang yuhan
wang liang » wang yang
yang john » young john, king john, yang jun
yuhan vu » tuan vu
vu irene » _ irene
yang jin » yang jie, yang jun, ying jin
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 liang yuhan vu irene ((yang john) or (yang jin)) ((wong sam) OR (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang yuhan vu irene ((yang john) OR (yang jin)) ((wong sam) OR (kong sar)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang yuhan vu irene ((yang john) or (yang jin)) ((wong sam) OR (kong sar)) ;*".