Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cang thang » cong thanh, dang thanh
hoc thuat » hoc thuyet, hoc thuc, hoc chat
chua dong » cua dong, huy dong, hoa dong
ha dong » hoat dong, van dong
ban can » ban hang, ban hanh, ban quan
ban dan » ban hang, ban hanh, ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thuat sach - canh tranh ((chua dong) or (ha dong)) cang thang ((ban can) OR (ban dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuat sach - canh tranh ((chua dong) OR (ha dong)) cang thang ((ban can) OR (ban dan))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thuat sach - canh tranh ((chua dong) or (ha dong)) cang thang ((ban can) OR (ban dan))*".