Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuan wang » yan wang, yuan kang, yuan chang
yuhan hua » tuan hua, yuan hui, yuhuan huang
hua rene » hua ren, juan rene
yang jin » yang jun, ying jin, shang jin
yang jie » yang di, yang jui, yang xi
hong yu » wong yue

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: yuan wang yuhan hua rene ((yang jin) or (yang jie)) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan wang yuhan hua rene ((yang jin) OR (yang jie)) hong yu ;.
• Adding a wildcard symbol may retrieve word variants: yuan wang yuhan hua rene ((yang jin) or (yang jie)) hong yu ;*.