Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
thang long » thanh cong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua thang » cua hang, cua thanh, xua thang
van toan » van tuan, van thanh, manh toan
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: hoc chieu sach - ((hanh tranh) or (hanh trinh)) cua thang long ((van toan) OR (van tan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((hanh tranh) OR (hanh trinh)) cua thang long ((van toan) OR (van tan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((hanh tranh) or (hanh trinh)) cua thang long ((van toan) OR (van tan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((hanh tranh) or (hanh trinh)) cua thang long ((van toan) OR (van tan)) ban*.