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 jun » pang jun, yang jin, yang judy
yang jie » yang jin, yang xi, yang yi
yang jui » yang judy, yang xi, yang yi
tan yan » tan yang, nan yan, tan tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tan yan zhang wei chen ((((((yang jun) or (yang jie))) or (yang jui))) or (yang di)) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tan yan zhang wei chen ((((((yang jun) OR (yang jie))) OR (yang jui))) OR (yang di)) shang hai ;.
• Adding a wildcard symbol may retrieve word variants: tan yan zhang wei chen ((((((yang jun) or (yang jie))) or (yang jui))) or (yang di)) shang hai ;*.