Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
chau tinh » cuu tinh, ha tinh, cua tinh
dung cong » dung trong
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 ban » van ban
va dung » van dung, va duong, vat dung

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)) - canh tranh va dung cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) OR (chau tinh)) - canh tranh va dung cong dan toan ban*".