Perhaps you should try some spelling variations:
ping jeong » ping pong, min jeong
dayuan li » yuan li
chen chen » chen zhen, chen chuan, chen chung
chen ping » chen rong, chen yang, chen wang
jeong shu » jeong su, cong shu
lang yan » wang yan, wang yang, zhang yan
guan li » yuan li, yuan lin

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: lang yan ((dayuan li) OR (((guan li) OR (gan li)))) chen chen ping jeong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan ((dayuan li) or (((guan li) OR (gan li)))) chen chen ping jeong shu ;~".
• Adding a wildcard symbol may retrieve word variants: lang yan ((dayuan li) or (((guan li) OR (gan li)))) chen chen ping jeong shu ;*.