Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
dan thanh » dang thanh, danh thanh, ban thanh
thanh hoa » thanh pho
cong dan » cong san, cong tan, huong dan

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