Perhaps you should try some spelling variations:
vien nganh » vien thanh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, nhung don
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
hoc vien » hoc hien, hoc viet, hoc tieng
san toan » van toan, dan toan, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc vien nganh - hanh trinh vat ((nhung cong) OR (hang cong)) ((san toan) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc vien nganh - hanh trinh vat ((nhung cong) OR (hang cong)) ((san toan) OR (manh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc vien nganh - hanh trinh vat ((nhung cong) OR (hang cong)) ((san toan) or (manh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc vien nganh - hanh trinh vat ((nhung cong) OR (hang cong)) ((san toan) or (manh toan)) cao*.