Perhaps you should try some spelling variations:
toan quoc » tran quoc, han quoc, toan hoc
quoc viet » nuoc viet, hoc viet, ngoc viet
va tuong » va thuong, va thong, xa truong
hoc van » hoc dan, hoc va, hoc phan
hoc vat » hoc va, hoc viet, thuc vat
dinh te » kinh te, dich te, dinh ve
va toan » van toan, bai toan, tap toan
te va » tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: cong ty tnhh đau va tuong ((hoc van) OR (hoc vat)) dinh te va toan quoc viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cong ty tnhh đau va tuong ((hoc van) OR (hoc vat)) dinh te va toan quoc viet".
• Adding a wildcard symbol may retrieve word variants: cong ty tnhh đau va tuong ((hoc van) OR (hoc vat)) dinh te va toan quoc viet*.