Perhaps you should try some spelling variations:
tnong nghiep » datnong nghiep, cong nghiep, huong nghiep
nong nghiep » cong nghiep, doanh nghiep
thiet hach » thien hach, thuyet hach, thiet hai
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tong cong » cong cong, dung cong, dang cong
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet hach - dinh ((tnong nghiep) or (nong nghiep)) ((tong cong) OR (trong cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet hach - dinh ((tnong nghiep) OR (nong nghiep)) ((tong cong) OR (trong cong)) van toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet hach - dinh ((tnong nghiep) or (nong nghiep)) ((tong cong) OR (trong cong)) van toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thiet hach - dinh ((tnong nghiep) or (nong nghiep)) ((tong cong) OR (trong cong)) van toan cau*.