Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh hinh » hanh chinh, hanh tinh, hanh dinh
con duong » van duong
ho chieu » theo chieu, hoc thieu, mot chieu
hinh cua » chinh cua, sinh cua, tinh cua
van toan » van tuan, van thanh, manh toan
cua con » cua cong, cua co, cua can
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) sach - hanh hinh cua con duong ((van toan) or (van tan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - hanh hinh cua con duong ((van toan) OR (van tan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - hanh hinh cua con duong ((van toan) or (van tan)) cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - hanh hinh cua con duong ((van toan) or (van tan)) cao*.