Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
danh thanh » dinh thanh, dang thanh, nhanh thanh
luan nang » luan van, van nang, luan san
nang nong » nang song, hang nong, nang dong
nong danh » nong dan, cong danh, dong danh
thanh mau » hanh mau, thanh san, thanh hai

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 (chiet tach)) - sach dung luan nang nong danh thanh mau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - sach dung luan nang nong danh thanh mau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - sach dung luan nang nong danh thanh mau*.