Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
song cong » cong cong, tong cong, song hong
hanh cam » hanh cham, hanh lam, hanh nam
cong dan » cong san, cong tan, huong dan
than tap » han tap, phan tap, than cap
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: doi chieu sach - hanh cam nang song cong dan ((than tap) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh cam nang song cong dan ((than tap) OR (toan tap))*".