Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
chinh quan » chinh luan, chinh quyen, chinh ngan
duong cong » dung cong, luong cong, duong trong
dong cong » dung cong, dang cong, cong cong
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh chinh quan ((dong cong) or (duong cong)) tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh chinh quan ((dong cong) OR (duong cong)) tac than cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh chinh quan ((dong cong) or (duong cong)) tac than cau*.