Perhaps you should try some spelling variations:
ping wang » ping pong, hong wang
shang kai » shang hai
hui chen » jui chen, hua chen, li chen
yang jie » yang jin, yang di, yang jui
li ping » li ying, li bing, li ning
yi chen » jui chen
yang yi » yang di, yang jui
yang xi » yang di, yang jui

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: li ping wang ((hui chen) OR (yi chen)) ((yang jie) OR (((yang yi) OR (yang xi)))) shang kai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "li ping wang ((hui chen) OR (yi chen)) ((yang jie) or (((yang yi) or (yang xi)))) shang kai ;~".
• Adding a wildcard symbol may retrieve word variants: li ping wang ((hui chen) OR (yi chen)) ((yang jie) or (((yang yi) or (yang xi)))) shang kai ;*.