Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
ctinh cua » chinh cua, sinh cua, trinh cua
tinh cua » trinh cua, sinh cua, tinh chat
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - hanh ((ctinh cua) or (tinh cua)) nhung ((cong tan) or (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - hanh ((ctinh cua) OR (tinh cua)) nhung ((cong tan) OR (cong tac)) toan tap.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh ((ctinh cua) or (tinh cua)) nhung ((cong tan) or (cong tac)) toan tap*.