Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
wang wang » wang yang, wang liang, wang yan
yuhan hua » tuan hua, yuan hui, yuhuan huang
hua irene » hua ren
yang jie » yang di, yang jui, yang xi
yang jin » yang jun, ying jin, shang 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yuhan hua irene ((yang jie) OR (yang jin)) ((wong sam) OR (kong sar)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang wang yuhan hua irene ((yang jie) OR (yang jin)) ((wong sam) or (kong sar)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang wang yuhan hua irene ((yang jie) OR (yang jin)) ((wong sam) or (kong sar)) ;*.