Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
thanh phan » thanh pho, thanh san, thanh toan
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
dan thanh » dang thanh, danh thanh, ban thanh
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 tinh) OR (chieu sach)) - sach dung luan nang cong dan thanh phan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tinh) OR (chieu sach)) - sach dung luan nang cong dan thanh phan".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) OR (chieu sach)) - sach dung luan nang cong dan thanh phan*.