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