Perhaps you should try some spelling variations:
biet nghiep » bien nghien, biet nghi, trien nghiep
nghiep cua » nghiep vua, nghiep luan, nghien cuu
nuoc biet » nuoc viet, nguoi biet, quoc viet
nhung co » nhung con, chung co, khung co
nhung bo » nhung bi, nhung bai, nhung don
sach dao » lanh dao
sach dat » sach danh, sach bai, sach xa
doi vi » doi voi, doi vai, doi va

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 dat) OR (sach dao)) nuoc biet nghiep cua ets : ((nhung co) OR (nhung bo)) doi vi đai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach dat) or (sach dao)) nuoc biet nghiep cua ets : ((nhung co) OR (nhung bo)) doi vi đai~".
• Adding a wildcard symbol may retrieve word variants: su ((sach dat) or (sach dao)) nuoc biet nghiep cua ets : ((nhung co) OR (nhung bo)) doi vi đai*.