Perhaps you should try some spelling variations:
doc chieu » doc hieu, toc thieu, hoc thieu
doi chieu » doc hieu, doi chi, ho chieu
banh hang » ban hang, banh rang, tranh hang
dang cong » dung cong
cong ban » cong bang, cong san, cong tan
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu
va dang » van dang, va nang, va lang

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) OR (doi chieu)) sach - banh hang va dang cong ban ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc chieu) OR (doi chieu)) sach - banh hang va dang cong ban ((than cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc chieu) OR (doi chieu)) sach - banh hang va dang cong ban ((than cau) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: ((doc chieu) OR (doi chieu)) sach - banh hang va dang cong ban ((than cau) or (phan cau))*.