Perhaps you should try some spelling variations:
thuong dong » phuong dong, tuong dong, chuong dong
truong cong » trong cong, truong dong, truong long
thanh tung » thanh cong
co trieu » cac trieu, cau trieu, mot trieu
tung cua » trung cua, tuong cua, dung cua
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: co trieu tinh - thanh tung cua ((truong cong) or (thuong dong)) ban toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co trieu tinh - thanh tung cua ((truong cong) OR (thuong dong)) ban toan cau.
• Adding a wildcard symbol may retrieve word variants: co trieu tinh - thanh tung cua ((truong cong) or (thuong dong)) ban toan cau*.