Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu xanh » hieu manh, hieu nganh, dieu hanh
cua nhung » va nhung
cuong bai » uong bi, cuong ma
cong cua » cong cu, dong cua, huong cua
cong bai » cong hai, cung bai, cong ba
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (chieu xanh)) - thanh cong cua nhung ((cong bai) OR (cuong bai)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - thanh cong cua nhung ((cong bai) OR (cuong bai)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (chieu xanh)) - thanh cong cua nhung ((cong bai) OR (cuong bai)) toan ban".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (chieu xanh)) - thanh cong cua nhung ((cong bai) OR (cuong bai)) toan ban*.