Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
china zhang » china chang, chin chang, china han
wang yuhan » wang luhang, wang yan, wang yidan
yuhan fang » yuhuan huang
hai phong » bai chong
kai hong » bai chong, wai hoong, kia hong
fang ii » fang ri, umfang ii, fang wei

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 ii ((china zhang) or (cheng zhang)) ((hai phong) OR (kai hong)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan fang ii ((china zhang) OR (cheng zhang)) ((hai phong) OR (kai hong)) shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yuhan fang ii ((china zhang) or (cheng zhang)) ((hai phong) OR (kai hong)) shu ;*".