Perhaps you should try some spelling variations:
doi chieu » doi chi, ho chieu, mot chieu
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
toan ban » van 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) OR (doc hieu)) sach - hanh tang cua dung cong dan ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - hanh tang cua dung cong dan ((toan ban) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sach - hanh tang cua dung cong dan ((toan ban) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) sach - hanh tang cua dung cong dan ((toan ban) or (toan tap))*.