Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuhan kang » yuan kang, chan kang, yuhuan huang
khan sher » han shen, than she
khan syed » ahsan syed, shah syed
chan fung » chan fong, can fund, chan kang
chan eng » chan fong, chan kang, chan ming
hung zhi » zhang zhi, zhong zhi, wang zhi

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 kang ((khan sher) or (khan syed)) ((chan fung) or (chan eng)) hung zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan kang ((khan sher) OR (khan syed)) ((chan fung) OR (chan eng)) hung zhi ;.
• Adding a wildcard symbol may retrieve word variants: wang yuhan kang ((khan sher) or (khan syed)) ((chan fung) or (chan eng)) hung zhi ;*.