Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan wang » yiqian wang, qian wang, yan wang
yuan cheng » yuan chang, huang cheng, tan cheng
zhang wang » zhang fang, zhang zhang, zhang fan
hua cheng » hua chen, huang cheng, hew cheng
wang hong » wang yong, wang hyoung, wang lihong
yu cheng » yu chen, _ cheng
hong zhi » zhong zhi, hong ghi, zhang 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 (yu cheng))) OR (yuan cheng)) zhang wang hong zhi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yidan wang ((((hua cheng) OR (yu cheng))) or (yuan cheng)) zhang wang hong zhi ;~".
• Adding a wildcard symbol may retrieve word variants: wang yidan wang ((((hua cheng) OR (yu cheng))) or (yuan cheng)) zhang wang hong zhi ;*.