Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan wang » yiqian wang, qian wang, yan wang
yuan cheng » huang cheng, yu cheng, tan cheng
yuan chang » huang chang, han chang, xuan thang
hua cheng » hua chen, huang cheng, yu cheng
zhang can » zhang fan, zhang yan, zhang han
can zhong » can hong, gao zhong
zhong tai » hong tan, hong hai, zhong 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 ((hua cheng) OR (((yuan cheng) OR (yuan chang)))) zhang can zhong tai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yidan wang ((hua cheng) or (((yuan cheng) OR (yuan chang)))) zhang can zhong tai ;~".
• Adding a wildcard symbol may retrieve word variants: wang yidan wang ((hua cheng) or (((yuan cheng) OR (yuan chang)))) zhang can zhong tai ;*.