Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, anh tang, hanh mang
hang cong » dang cong, hang nong, bang cong
tang cua » mang cua, hang cua, tang luan
cua hang » cua dang, cua nhung, cua cong
cong san » cong tac
toan cao » toan tap

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 - hanh tang cua hang cong san ((toan cao) OR (((toan ban) OR (van ban))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh tang cua hang cong san ((toan cao) or (((toan ban) OR (van ban))))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh tang cua hang cong san ((toan cao) or (((toan ban) OR (van ban))))*.