Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
luan thong » luan phong, luan tuong, luat thong
thong cong » trong cong, tong cong, thong thong
anh dung » anh dong, anh huong, sach dung
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cau » toan cau, phan cau, than cap
chuc » thuc, chu, chua

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 (chuc nang)) - anh dung luan thong cong van than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chuc nang)) - anh dung luan thong cong van than cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chuc nang)) - anh dung luan thong cong van than cau*.