Perhaps you should try some spelling variations:
chen ping » chen yang, chen wang
chen rong » chen yang
cheng tan » cheng han, chen tan, cheng guan
ying tong » xin tong, ying yang
tan ying » fan ying, ran ying, tan yang
yang yi » yang xi, yang jui
tong a » kong a, hong a, jong a

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: ((chen ping) OR (chen rong)) ((yang di) OR (yang yi)) cheng tan ying tong a ;~.
• Adding a wildcard symbol may retrieve word variants: ((chen ping) or (chen rong)) ((yang di) or (yang yi)) cheng tan ying tong a ;*.