Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trinh cua » trinh luat, trinh quan, trinh luan
bang cong » dang cong, bang song, hang cong
tinh cua » sinh cua, tinh chat, tranh cua
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van 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 sach - hanh ((trinh cua) OR (tinh cua)) bang cong tan ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((trinh cua) or (tinh cua)) bang cong tan ((toan cau) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((trinh cua) or (tinh cua)) bang cong tan ((toan cau) OR (toan ban))*.