Perhaps you should try some spelling variations:
biet nghia » biet nghi, viet nghin
nha thuoc » nha nuoc, nhan thuc
nghia cua » nghiep cua, nghia xa, nghia duy
su sach » so sach, vu sach
nha hoc » khoa hoc, nha nuoc, thai hoc
doc vi » don vi, doc va, doc viet
hoc vi » hoc va, hoc viet

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 hoc) OR (nha thuoc)) biet nghia cua ets : nhung bai ((doc vi) or (hoc vi)) đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((nha hoc) OR (nha thuoc)) biet nghia cua ets : nhung bai ((doc vi) OR (hoc vi)) đai*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((nha hoc) OR (nha thuoc)) biet nghia cua ets : nhung bai ((doc vi) or (hoc vi)) đai*".