Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, che tinh
kieu tinh » trieu tinh, diep tinh, bien tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
dang cong » dung cong
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
va dang » van dang, va nang, va lang

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