Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
dung cua » dung luan
cong tap » cuong tap, cong tac, cong tan
tap quan » tac quan, hai quan
quan tai » quan tri, quang tri, quan li

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh ((dung cua) OR (dung cho)) nhung cong tap quan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((dung cua) OR (dung cho)) nhung cong tap quan tai".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((dung cua) OR (dung cho)) nhung cong tap quan tai*.