Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, dieu hanh, hien hanh
trang va » tran van, hang va
va thong » va thuong, va phuong, he thong
cong tac » cong ty
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 ((hieu nganh) or (hieu manh)) - hanh trang va thong ((cong san) OR (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (hieu manh)) - hanh trang va thong ((cong san) OR (cong tac)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu nganh) or (hieu manh)) - hanh trang va thong ((cong san) OR (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (hieu manh)) - hanh trang va thong ((cong san) OR (cong tac)) toan cao*.