Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
trong dan » trong dang, trong san, trong tan
vat dung » van dung, viet dung, mat duong
cong san » cong tac
toan cao » toan ban, toan tap
va dung » van dung, va duong, va ung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - thanh trung ((vat dung) or (va dung)) ((trong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh trung ((vat dung) OR (va dung)) ((trong dan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh trung ((vat dung) or (va dung)) ((trong dan) or (cong san)) toan cao*.