Perhaps you should try some spelling variations:
thanh tung » thanh cong
theo tien » theo tieu, theo tcvn, tien tien
thuc tien » thuc hien
tung tuan » trung tuan, hung tuan, quang tuan
tuan tong » toan tong, thuan trong, toan thong
tong cong » trong cong, cong cong, dung cong
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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: ((theo tien) OR (thuc tien)) hanh - thanh tung tuan tong cong ((dan than) OR (van than)) cau~.
• Adding a wildcard symbol may retrieve word variants: ((theo tien) or (thuc tien)) hanh - thanh tung tuan tong cong ((dan than) or (van than)) cau*.