Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
thanh chau » thanh cha, thanh cham, thanh chu
hieu manh » chieu xanh, dieu hanh, hien hanh
tong cong » trong cong, cong cong, dung cong
san thanh » ban thanh, van thanh, son thanh
tranh ha » thanh ha, trang ha, trinh ha
cong san » cong tac
ha tong » han tong, ha dong, ha tang

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 manh) or (hieu nganh)) - canh tranh ha tong cong san thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - canh tranh ha tong cong san thanh chau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (hieu nganh)) - canh tranh ha tong cong san thanh chau*.