Perhaps you should try some spelling variations:
tranh nghiep » doanh nghiep, trinh nghien, trac nghiem
nghiep duoc » nghiem duoc, nghiep cuoc, nghiep quoc
trach nhiem » trac nghiem
sach tranh » canh tranh
sach trach » sach truc, sat trach
duoc hoc » quoc hoi
bang hoc » nang hoc, mang hoc, quang hoc
te sach » toc sach
su sach » so sach, vu sach
ban hoc » van hoc, bai hoc, dan hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tranh nghiep duoc hoc ) or ( su sach trach nhiem ((ban hoc) OR (bang hoc)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tranh nghiep duoc hoc ) OR ( su sach trach nhiem ((ban hoc) OR (bang hoc)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( te sach tranh nghiep duoc hoc ) or ( su sach trach nhiem ((ban hoc) OR (bang hoc)) ))*".