Perhaps you should try some spelling variations:
zhang yuhui » zhang hui
yuhui chen » yulu chen
yan zhang » yuan chang, bin zhang, han chang
shang hai » shang kai, dang hai, chang ha
yang jui » yang di
wan yan » wang yan, nan yan, wai yan
yang xi » yang di
yang yi » yang di

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 yuhui chen ((yang judy) or (((((yang xi) OR (yang jui))) or (yang yi)))) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan zhang yuhui chen ((yang judy) OR (((((yang xi) OR (yang jui))) OR (yang yi)))) shang hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan zhang yuhui chen ((yang judy) or (((((yang xi) OR (yang jui))) or (yang yi)))) shang hai ;*".