Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doc chieu » doc hieu, doi chieu, toc thieu
thanh phi » thanh pho, thanh phan, thanh pham
dung cong » dung trong
van tinh » van thinh, van minh, ban tinh
phi van » phi san, thi van, phi va
chat » nhat, phat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sach - thanh phi van ((dang cong) OR (dung cong)) van tinh chat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc chieu sach - thanh phi van ((dang cong) OR (dung cong)) van tinh chat".
• Adding a wildcard symbol may retrieve word variants: doc chieu sach - thanh phi van ((dang cong) OR (dung cong)) van tinh chat*.