Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
kien nghi » biet nghi, kien noi
nhung don » nhung van
kien chi » trien chi, khien cho, hieu chi
nhung bo » nhung bi, nhung bai, trung bo
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 nghi) OR (kien chi)) cua ets : ((nhung bo) or (nhung don)) doc vi đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach nha thuoc ((kien nghi) OR (kien chi)) cua ets : ((nhung bo) OR (nhung don)) doc vi đai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach nha thuoc ((kien nghi) OR (kien chi)) cua ets : ((nhung bo) or (nhung don)) doc vi đai".
• Adding a wildcard symbol may retrieve word variants: su sach nha thuoc ((kien nghi) OR (kien chi)) cua ets : ((nhung bo) or (nhung don)) doc vi đai*.