Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
canh ban » can ban, canh van, doanh ban
canh dan » canh van, sanh dan, thanh dan
sua dung » suat dung, su dung, qua dung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan cac » nhan cach, phan dau, phan lap

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 sach - ((canh ban) OR (canh dan)) sua dung ((cong dan) OR (cong san)) phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((canh ban) or (canh dan)) sua dung ((cong dan) OR (cong san)) phan cac~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((canh ban) or (canh dan)) sua dung ((cong dan) OR (cong san)) phan cac*.