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