Perhaps you should try some spelling variations:
juan rene » juan meng, juan rana
dong sink » dong bin, dong ping
jiu congo » jiu cong, du congo, eic congo
congo shu » cong shu
hua rene » hua ren
yan jiu » yang jie, yang jin, pang jiu
wang » wing, wan, lang
sink » signk, sindk, skink
sin » sign, sind, skin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yan) or (((dong sink) or (dong sin)))) ya ((hua rene) or (juan rene)) yan jiu congo shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yan) OR (((dong sink) OR (dong sin)))) ya ((hua rene) OR (juan rene)) yan jiu congo shu ;.
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (((dong sink) or (dong sin)))) ya ((hua rene) or (juan rene)) yan jiu congo shu ;*.