Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
mang vua » mang cua, hang va, bang va
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
mang va » hang va, bang va, dang va

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 - nhanh ((mang va) OR (mang vua)) nhung cong dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - nhanh ((mang va) OR (mang vua)) nhung cong dan ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - nhanh ((mang va) OR (mang vua)) nhung cong dan ((toan cau) or (toan tap))*.