Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
tung hay » tung bay, trung hai, tung pham
cung hay » cong hay, cung may, chung han
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh ((tung hay) OR (cung hay)) nhung cong tan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((tung hay) OR (cung hay)) nhung cong tan ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((tung hay) OR (cung hay)) nhung cong tan ((toan cao) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tung hay) OR (cung hay)) nhung cong tan ((toan cao) or (toan tap))*.