Perhaps you should try some spelling variations:
thanh tang » thanh thang, thanh trang, thanh tung
thong cong » trong cong, tong cong, thong thong
van thong » van thuong, van phong, va thong
tang van » dang van, hoang van, trong van
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
so lieu » so dieu
co lieu » cot lieu, co hieu, cu lieu

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: ((so lieu) OR (co lieu)) tinh - thanh tang van thong cong tac toan cao~.
• Adding a wildcard symbol may retrieve word variants: ((so lieu) or (co lieu)) tinh - thanh tang van thong cong tac toan cao*.