Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh dong » anh dong, ha dong
cua thong » cua thuong, cua khong, suat thong
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
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 ((hieu manh) or (chieu sang)) - hanh dong ((cua thong) OR (cua tong)) cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sang)) - hanh dong ((cua thong) OR (cua tong)) cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (chieu sang)) - hanh dong ((cua thong) OR (cua tong)) cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sang)) - hanh dong ((cua thong) OR (cua tong)) cong dan toan tap*.