Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
yidan wang » yiqian wang, yan wang, yuan wang
qian wang » yiqian wang, qian rong, qian yan
hua cheng » hua chen, huang cheng, yuan cheng
zhang yan » zhang fan, zhang jian, wang yan
cong zhi » zhong zhi, wang zhi, cong shu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yidan wang) or (qian wang)) hua cheng zhang yan cong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yidan wang) OR (qian wang)) hua cheng zhang yan cong zhi ;*.