Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
quan thong » quang thong, quan trong, xuan thong
thong cong » trong cong, tong cong, thong thong
ho chieu » hoc thieu, doi chieu, mot chieu
hanh ban » thanh ban, hang ban, hanh san
ban quan » van quan
cong san » cong tac
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - hanh ban quan thong cong san ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - hanh ban quan thong cong san ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - hanh ban quan thong cong san ((toan cau) or (toan tap))*.