Perhaps you should try some spelling variations:
trien nghiep » trinh nghien, vien nghien, bien nghien
biet nghiep » bien nghien, biet nghi
nhung co » nhung con, nhung bo, chung co
su sach » vu sach
so sach » so sanh, bo sach, co sach
co doi » cho doi, co dot, co dai
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) OR (so sach)) dat nuoc ((biet nghiep) OR (trien nghiep)) cua ets : nhung co doi vi đai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) dat nuoc ((biet nghiep) OR (trien nghiep)) cua ets : nhung co doi vi đai~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) dat nuoc ((biet nghiep) OR (trien nghiep)) cua ets : nhung co doi vi đai*.