Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, nhieu tang
thanh tran » thanh trang, thanh toan, thanh tra
hieu lang » hieu quang, nhieu tang, hieu van
tran tuan » tran xuan, tran quang, tran thanh
tuan tong » toan tong, thuan trong, toan thong
tong cong » trong cong, cong cong, dung cong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
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) OR (hieu lang)))) - thanh tran tuan tong cong tan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - thanh tran tuan tong cong tan than cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - thanh tran tuan tong cong tan than cau*.