Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
truong cong » truong dong, truong long, truong chung
chieu sang » chieu sach, chieu xanh, nhieu tang
thuong cua » huong cua, thong cua, truong cua
hieu lang » hieu quang, nhieu tang, hieu van
tac toan » tap toan, tam toan, hach toan
toan ban » van 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: ho ((chieu sang) OR (hieu lang)) - thanh thuong cua ((truong cong) OR (trong cong)) tac toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (hieu lang)) - thanh thuong cua ((truong cong) OR (trong cong)) tac toan ban~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu lang)) - thanh thuong cua ((truong cong) OR (trong cong)) tac toan ban*.