Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, kieu tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trong dan » trong dang, trong san, trong tan
va tuong » va thuong, va thong, xa truong
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
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 (lieu tinh)) - canh tranh ((va dung) or (va tuong)) trong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (lieu tinh)) - canh tranh ((va dung) OR (va tuong)) trong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) or (lieu tinh)) - canh tranh ((va dung) or (va tuong)) trong dan toan cao*.