Perhaps you should try some spelling variations:
yan zhang » yuan chang, bin zhang, han chang
shang hai » shang kai, dang hai, chang ha
wei chen » frei chen, jui chen, yi chen
wei shen » kwei sheng, enwei shen, wei shang
ryang yi » yang yi, yang di, jiang yi
ryang di » yang di, yang xi, yang yi
ryang xi » yang xi, yang di, yang li
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) OR (wei shen)) ((((ryang yi) or (ryang di))) or (ryang xi)) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan zhang ((wei chen) OR (wei shen)) ((((ryang yi) OR (ryang di))) OR (ryang xi)) shang hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan zhang ((wei chen) OR (wei shen)) ((((ryang yi) or (ryang di))) or (ryang xi)) shang hai ;*".