Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
manh toan » thanh toan, tinh toan
trinh va » trinh van, trinh vat, trinh ve
so lieu » so dieu
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: so lieu tinh - canh trinh va dung cong ((((manh toan) or (xuan toan))) or (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so lieu tinh - canh trinh va dung cong ((((manh toan) OR (xuan toan))) OR (anh tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: so lieu tinh - canh trinh va dung cong ((((manh toan) or (xuan toan))) or (anh tuan)) cau*.