Perhaps you should try some spelling variations:
chieu tach » chiet tach, chieu sach, chiu trach
doi chieu » doc hieu, doi chi, ho chieu
tinh bang » tinh sang, tinh lang, tinh quang
dang cong » dung cong
bang cua » ban cua, mang cua, hang cua
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

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: doi chieu tach - tinh bang cua dang cong tan ((khan cap) OR (khan ap))~.
• Adding a wildcard symbol may retrieve word variants: doi chieu tach - tinh bang cua dang cong tan ((khan cap) or (khan ap))*.