Perhaps you should try some spelling variations:
biet nghia » biet nghi, viet nghin
nuoc biet » nuoc viet, nguoi biet, quoc viet
nhung bo » nhung bi, nhung bai, nhung don
su sach » so sach
vu sach » vu bach, vu khach
doi vi » doi voi, doi vai, boi vi
doi va » hoi va, noi va, dai va
nha » nhan, nhat

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) nha nuoc biet nghia duy ets : nhung bo ((doi vi) OR (doi va)) đai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) nha nuoc biet nghia duy ets : nhung bo ((doi vi) OR (doi va)) đai~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) nha nuoc biet nghia duy ets : nhung bo ((doi vi) OR (doi va)) đai*.