Perhaps you should try some spelling variations:
rong nghiep » cong nghiep, nong nghiep, dong nghiep
nghiem dien » nghiep dien, nghiem tien, nghiem tieng
hoach rong » hoach trong, hoa rong, hoach bang
nghiep tu » nghiep vu, nghiep vua, nghiep cua
thu sach » tu sach, thuat sach, thuoc sach
dien hoc » dien hoa, khien hoc, tin hoc
su sach » so sach, vu sach
tu hoc » te hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hoach rong nghiep tu hoc ) or ( ((su sach) or (thu sach)) trac nghiem dien hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach rong nghiep tu hoc ) OR ( ((su sach) OR (thu sach)) trac nghiem dien hoc )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach rong nghiep tu hoc ) or ( ((su sach) or (thu sach)) trac nghiem dien hoc ))*.