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
thong cong » trong cong, tong cong, thong thong
doan phan » doanh phan, dan phan, doanh nhan
toan phan » thanh phan, toan ban, hoa phan
va thong » va thuong, va phuong, he thong
toan va » doan va, tran van, toan ban

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