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
chang mae » chang ha, changes made
wei chen » wei shen, frei chen, jui chen
yang jin » yang jie, yang jun, ying jin
wan yan » wang yan, nan yan, wai yan
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.

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