Perhaps you should try some spelling variations:
nghiep nganh » nghiep thanh, nghiep ninh, nghiep anh
vien nganh » vien thanh
hanh trang » thanh trung, canh tranh, hanh trinh
trang va » tran van, hang va
cong tac » cong ty
toan tap » toan ban
va tong » va thong, va tuong, va trong

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

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