Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
wang xiuyan » wang xinyan, wang xuan
wang yuhan » wang luhang, wang yan, wang yidan
did cheng » did china, xi cheng
zhang han » zhang fan, zhang yan, zhang hanmo
fang did » yang di, long did, fang ri
han cong » yan cong, pham cong, han chang

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 cheng zhang han cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang xiuyan) OR (wang yuhan)) fang did cheng zhang han cong shu ;*.