Perhaps you should try some spelling variations:
shang kai » shang hai
jiao yan » xiao yuan, xiao yang, qian yan
yan wang » yuan wang, yang yang, qian wang
wei chen » wei shen, frei chen, yi chen
jui chen » yi chen
yang jin » yang jie, yang jun, ying jin
yang xi » yang di, yang yi, 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: jiao yan wang ((wei chen) OR (jui chen)) ((yang jin) OR (yang xi)) shang kai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "jiao yan wang ((wei chen) OR (jui chen)) ((yang jin) or (yang xi)) shang kai ;~".
• Adding a wildcard symbol may retrieve word variants: jiao yan wang ((wei chen) OR (jui chen)) ((yang jin) or (yang xi)) shang kai ;*.