Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
khoan cam » khoa cam, khoan va, phan cam
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
than cap » khan cap, thanh lap, thanh cac

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 tinh - hanh ((tang cua) OR (trung cua)) trong cong tac ((than cap) OR (khoan cam))~.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh ((tang cua) or (trung cua)) trong cong tac ((than cap) or (khoan cam))*.