Perhaps you should try some spelling variations:
yan zhang » yuan chang, bin zhang, han chang
zhang wei » zhen wei
shang hai » shang kai, dang hai, chang ha
wei chen » wei shen, frei chen, jui chen
yang jie » yang di, yang xi, yang yi
yang jin » ying jin, shang jin, wang jing
yang jun » pang jun, yang judy, yang fan
yang jui » yang judy, yang di, yang xi
wan yan » wang yan, nan yan, wai yan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan zhang wei chen ((((((yang jie) OR (yang jin))) or (yang jun))) or (yang jui)) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan zhang wei chen ((((((yang jie) OR (yang jin))) OR (yang jun))) OR (yang jui)) shang hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan zhang wei chen ((((((yang jie) OR (yang jin))) or (yang jun))) or (yang jui)) shang hai ;*".