Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
union sacu » non sacu
wang wang » wang yang, wang liang, wang yan
yuhan hua » tuan hua, yuan hui, yuhuan huang
hua rene » hua ren, juan rene
yang lin » yang jin, wang lin, yang li
wong sau » wong sam, wong siu, wong shiu
yang xi » yang yi, yang jui

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 hua rene ((((yang xi) or (yang lin))) or (yang di)) ((union sacu) or (wong sau)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yuhan hua rene ((((yang xi) OR (yang lin))) OR (yang di)) ((union sacu) OR (wong sau)) ;.
• Adding a wildcard symbol may retrieve word variants: wang wang yuhan hua rene ((((yang xi) or (yang lin))) or (yang di)) ((union sacu) or (wong sau)) ;*.