Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
cua khong » cua phuong, cua thuong, cua cong
hua khong » hoa khong, hoac khong, phuc khong
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cao » toan ban, toan tap

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 trinh ((cua khong) or (hua khong)) ((cong tan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - hanh trinh ((cua khong) OR (hua khong)) ((cong tan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh trinh ((cua khong) or (hua khong)) ((cong tan) or (cong san)) toan cao*.