Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thong cong » trong cong, thong thong, phong chong
hanh dong » anh dong, ha dong
tong cong » trong cong, cong cong, dung cong
dong cua » dung cua, cong cua, huong cua
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) or (chieu sang)) - hanh dong cua ((thong cong) OR (tong cong)) dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - hanh dong cua ((thong cong) OR (tong cong)) dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - hanh dong cua ((thong cong) OR (tong cong)) dan toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - hanh dong cua ((thong cong) OR (tong cong)) dan toan tap*.