Perhaps you should try some spelling variations:
thuoc kien » thuoc kiem, thuoc phien, thuoc tren
nha thuoc » nha nuoc, nhan thuc, nha hoc
nghia cua » nghiep cua, nghia xa, nghe cua
nhung bo » nhung bai, nhung don, trung bo
nhung bi » nhung bai, nhung gi
su sach » so sach, vu sach
doc vi » hoc vi, don vi, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach nha thuoc kien ((nghia cua) OR (nghia duy)) ets : ((nhung bo) or (nhung bi)) doc vi đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach nha thuoc kien ((nghia cua) OR (nghia duy)) ets : ((nhung bo) OR (nhung bi)) doc vi đai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach nha thuoc kien ((nghia cua) OR (nghia duy)) ets : ((nhung bo) or (nhung bi)) doc vi đai".
• Adding a wildcard symbol may retrieve word variants: su sach nha thuoc kien ((nghia cua) OR (nghia duy)) ets : ((nhung bo) or (nhung bi)) doc vi đai*.