Perhaps you should try some spelling variations:
thi nghiem » thuc nghiem
dao nghiep » day nghiep, khao nghiep, lam nghiep
hoach thi » hoach thu, hoach toi, hoach thay
nghiep va » nghiep vu
sach dao » lanh dao
ban hoc » bang hoc, bai hoc, dan hoc
van hoc » van hoa
su sach » so sach, vu sach

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: (( thu hoach thi nghiem ((ban hoc) OR (van hoc)) ) OR ( su sach dao nghiep va hoc ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thu hoach thi nghiem ((ban hoc) OR (van hoc)) ) or ( su sach dao nghiep va hoc ))~".
• Adding a wildcard symbol may retrieve word variants: (( thu hoach thi nghiem ((ban hoc) OR (van hoc)) ) or ( su sach dao nghiep va hoc ))*.