Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
tung chua » cong chua, dung nhua, hung chu
cung chua » cung cua, cong chua, chung chuan
bang cong » dang cong, bang song, hang cong
cong tac » cong ty
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 - thanh ((tung chua) or (cung chua)) bang cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh ((tung chua) OR (cung chua)) bang cong tac than cau*.