Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
vat dung » van dung, viet dung, mat duong
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, va ung

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh tuong ((va dung) OR (vat dung)) cong dan toan ban~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh tuong ((va dung) OR (vat dung)) cong dan toan ban*.