Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh toan » thanh hoa, thanh san, tinh toan
cong thanh » dong thanh, cong trinh, cong tan
thanh than » thanh thanh, thanh thang, thanh phan
toan quan » tran quang, doan quang, van quan
quan tong » quan trong, quan dong, quan long
tong cong » trong cong, cong cong, dung cong
than cau » toan cau, phan cau, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - thanh toan quan tong cong thanh than cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - thanh toan quan tong cong thanh than cau*.