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
yang john » young john, king john, yang jin
ren yang » ren yan, chen yang, dan yang
wong sam » wong sau, wong lai, kong sar
hua ren » hua chen

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 ren yang john ((wong sam) or (kong (sar or star))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yuhan hua ren yang john ((wong sam) OR (kong (sar OR star))) ;.
• Adding a wildcard symbol may retrieve word variants: wang wang yuhan hua ren yang john ((wong sam) or (kong (sar or star))) ;*.