Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
tran dang » tran quang, tran hoang, tranh hang
cua nhung » va nhung
dang cua » dung cua, dong cua, mang cua
cong dan » cong san, cong tan, cong dong
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, 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 - tran dang cua nhung ((cong dan) OR (huong dan)) ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - tran dang cua nhung ((cong dan) or (huong dan)) ((toan cau) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - tran dang cua nhung ((cong dan) or (huong dan)) ((toan cau) OR (toan cao))*.