Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
luan tong » luan tuong, luan cong, luan dong
tong cong » trong cong, cong cong, dung cong
anh dung » anh dong, anh huong, sach dung
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 ((chieu sach) or (hieu manh)) - anh dung luan tong cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (hieu manh)) - anh dung luan tong cong dan toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (hieu manh)) - anh dung luan tong cong dan toan tap*.