Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
chau tinh » cuu tinh, ha tinh, cua tinh
cong doan » cong dan, cong hoan, dong doanh
tranh va » tranh van, trang va, trinh va
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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