Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
canh manh » lanh manh, canh tranh, cach mang
cong tac » cong ty
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
manh va » hanh va, anh va, minh va

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 - canh manh va nhung ((cong san) or (cong tac)) ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - canh manh va nhung ((cong san) OR (cong tac)) ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - canh manh va nhung ((cong san) or (cong tac)) ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - canh manh va nhung ((cong san) or (cong tac)) ((toan cau) OR (toan cao))*.