Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
wang xiuyan » wang xinyan, wang xuan
wang yuhan » wang luhang, wang yan, wang yidan
did china » did china's
zhang hai » zhang dai, shang hai, zhang han
fang did » yang di, long did, fang ri
hai cong » pham cong, bai chong, hai phong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang xiuyan) or (wang yuhan)) fang did china zhang hai cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang xiuyan) OR (wang yuhan)) fang did china zhang hai cong shu ;*.