Perhaps you should try some spelling variations:
mot chieu » doi chieu, ho chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cong danh » cuong danh, cong thanh, cong khanh
tinh cua » trinh cua, sinh cua, tinh chat
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: ((theo tieu) or (mot chieu)) sach - hanh tinh cua dung ((cong danh) OR (cong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (mot chieu)) sach - hanh tinh cua dung ((cong danh) OR (cong dan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (mot chieu)) sach - hanh tinh cua dung ((cong danh) OR (cong dan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (mot chieu)) sach - hanh tinh cua dung ((cong danh) OR (cong dan)) toan ban*.