Perhaps you should try some spelling variations:
yidan wang » yiqian wang, yan wang, yuan wang
chen zhang » cheng zhang, zhen zhang, chen zheng
zhang minh » zhang ming, zhang xin, chang min
qian wang » yiqian wang, qian rong, qian yan
hua chen » jui chen, yu chen, a chen
cong zhi » zhong zhi, wang zhi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yidan wang) OR (qian wang)) hua chen zhang minh ((cong zhi) OR (cong shu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yidan wang) or (qian wang)) hua chen zhang minh ((cong zhi) OR (cong shu)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yidan wang) or (qian wang)) hua chen zhang minh ((cong zhi) OR (cong shu)) ;*.