Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuhan fang » yuhuan huang
wei cheng » kwei sheng, wei shang, ke cheng
hew cheng » yew chong, ke cheng
zhang bai » zhang dai, zhang fan, zhang wei
bai chong » lai chung, wai chung, hai phong
chong shu » cong shu, chong suk

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 fang ((wei cheng) or (hew cheng)) zhang bai chong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan fang ((wei cheng) OR (hew cheng)) zhang bai chong shu ;*.