Perhaps you should try some spelling variations:
thanh tung » thanh cong
tieu xanh » chieu xanh, dieu hanh, tien anh
tieu danh » dieu danh, tiep danh, thien danh
van hanh » van thanh, ban hanh, van anh
van nang » van quang, van ban, van dong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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: theo ((tieu xanh) OR (tieu danh)) - thanh tung ((van hanh) OR (van nang)) cong van toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) OR (tieu danh)) - thanh tung ((van hanh) or (van nang)) cong van toan ban~".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) OR (tieu danh)) - thanh tung ((van hanh) or (van nang)) cong van toan ban*.