Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu sach » hieu cach, dien sach, hieu cac
bang cong » dang cong, bang song, hang cong
thong cac » trong cac, phong cach, thong cua
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cua bang » chua bang, cua ban, cua dang
cong ban » cong bang, cong san, cong tan
thai cac » thoai cac, tai cac, khai cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sach) OR (chieu sach)) - anh tang cua bang cong ban ((thai cac) or (thong cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sach) OR (chieu sach)) - anh tang cua bang cong ban ((thai cac) OR (thong cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sach) OR (chieu sach)) - anh tang cua bang cong ban ((thai cac) or (thong cac))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sach) OR (chieu sach)) - anh tang cua bang cong ban ((thai cac) or (thong cac))*.