Perhaps you should try some spelling variations:
nghiep nganh » nghiep thanh, nghiep ninh, nghiep anh
hieu nganh » hiem ngan, hieu manh
vien nganh » vien thanh
thanh tung » thanh cong
tong cong » trong cong, cong cong, dung cong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap
tung va » trung va, tuong va, dung va
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 ((((hieu nganh) OR (nghiep nganh))) or (vien nganh)) - thanh tung va tong cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu nganh) OR (nghiep nganh))) OR (vien nganh)) - thanh tung va tong cong san toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hieu nganh) OR (nghiep nganh))) or (vien nganh)) - thanh tung va tong cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu nganh) OR (nghiep nganh))) or (vien nganh)) - thanh tung va tong cong san toan cao*.