Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
trong dan » trong dang, trong san, trong tan
canh dai » can dai, canh dan, vanh dai
cua dung » cua dang, cua dong, qua dung
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: ho ((((chieu xanh) or (chieu sach))) or (hieu qua)) - canh dai cua dung trong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu xanh) OR (chieu sach))) OR (hieu qua)) - canh dai cua dung trong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu xanh) or (chieu sach))) or (hieu qua)) - canh dai cua dung trong dan toan cao*.