Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
dang cong » dung cong
cong cua » cong cu, dong cua, huong cua
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
tan cac » tai cac, tap cac, ton cac
cac cau » cac mau, bac cau, ca cau

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 (chieu xanh)) - thanh cong cua dang cong tan cac cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - thanh cong cua dang cong tan cac cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - thanh cong cua dang cong tan cac cau*.