Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
chieu tinh » lieu tinh, chau tinh, kieu tinh
tranh va » tranh van, trang va, trinh va
va duong » van duong, va tuong, va huong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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) OR (trieu tinh)) - canh tranh va duong cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) OR (trieu tinh)) - canh tranh va duong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) OR (trieu tinh)) - canh tranh va duong cong dan toan cao*.