Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
cheng han » chen hao
zhang ii » zhang li, zhang si, zhang yi
kai hong » bai chong, hai phong, wai hoong
hong shu » cong shu, tong shui, wong shiu
zhang i » zhang li, zhang si, zhang yi
han kai » tan kai, shang kai, yuan kai

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuhan ((zhang ii) or (zhang i)) cheng han kai hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan ((zhang ii) OR (zhang i)) cheng han kai hong shu ;*.