Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
dung khong » dung khang, dung hong, dung phong
trung xay » trung gay, trung tam, trung cap
trong xay » thong xay, trong cac, trong ca
khong anh » khuong anh, khong hanh, hong anh
anh toan » manh toan, anh tuan, thanh toan
toan cau » 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: theo ((chieu sang) OR (chieu sach)) - thanh ((trung xay) or (trong xay)) dung khong anh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu sach)) - thanh ((trung xay) OR (trong xay)) dung khong anh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (chieu sach)) - thanh ((trung xay) or (trong xay)) dung khong anh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (chieu sach)) - thanh ((trung xay) or (trong xay)) dung khong anh toan cau*.