Perhaps you should try some spelling variations:
guan juan » huang juan, san juan, quan guan
juan rene » juan meng, juan rana
wing gan » qing gan, wing ian, wing tan
gan guan » yan guan, quan guan, fan guon
yang jie » yang jin, yang jui, yang yi
yan jiu » yang jin, pang jiu
yang xi » yang yi, 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: wing gan guan juan rene ((((yan jiu) or (((yang jie) OR (yang xi))))) or (yang di)) cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing gan guan juan rene ((((yan jiu) OR (((yang jie) OR (yang xi))))) OR (yang di)) cong shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing gan guan juan rene ((((yan jiu) or (((yang jie) OR (yang xi))))) or (yang di)) cong shu ;".
• Adding a wildcard symbol may retrieve word variants: wing gan guan juan rene ((((yan jiu) or (((yang jie) OR (yang xi))))) or (yang di)) cong shu ;*.