Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
congo shu » cong shu
hua rein » hua ren, hua wei, a rein
pang jiu » pang jun, yang jie, yang jin
ying jin » yang jin, jing ji, yang jie
yan jiu » yang jie, yang jin
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: ((dong yang) or (dong sin)) ya hua rein ((((yan jiu) OR (pang jiu))) or (ying jin)) congo shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (dong sin)) ya hua rein ((((yan jiu) OR (pang jiu))) OR (ying jin)) congo shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (dong sin)) ya hua rein ((((yan jiu) OR (pang jiu))) or (ying jin)) congo shu ;*".