Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
dung cong » dung trong
cong cua » cong cu, dong cua, huong cua
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan cac » dan cach, dang cac, dan ca
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) OR (chieu sang)))) - thanh cong cua dung cong dan cac cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (((chieu xanh) OR (chieu sang)))) - thanh cong cua dung cong dan cac cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (((chieu xanh) OR (chieu sang)))) - thanh cong cua dung cong dan cac cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (((chieu xanh) OR (chieu sang)))) - thanh cong cua dung cong dan cac cau*.