Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
mot chieu » doi chieu, ho chieu
canh manh » lanh manh, canh tranh, cach mang
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (mot chieu)) sach - canh manh ((cua dung) OR (cua dong)) cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (mot chieu)) sach - canh manh ((cua dung) OR (cua dong)) cong tac than cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (mot chieu)) sach - canh manh ((cua dung) OR (cua dong)) cong tac than cau*".