Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh tran » thanh trang, thanh tra, thanh tuan
thong cong » trong cong, tong cong, thong thong
thanh toan » thanh hoa, tinh toan
tran toan » tranh toan, tran tuan, tran tan

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 tran toan thong cong ((thanh toan) OR (thanh san)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sang)) - thanh tran toan thong cong ((thanh toan) OR (thanh san)) ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - thanh tran toan thong cong ((thanh toan) OR (thanh san)) ban*.