Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
tang cua » mang cua, hang cua, tang luan
cong tan » cong san, cong ty, cong ha
cong tac » cong ty
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 - hanh tang cua nhung ((((cong tan) OR (cong tac))) OR (cong thanh)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh tang cua nhung ((((cong tan) OR (cong tac))) or (cong thanh)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tang cua nhung ((((cong tan) OR (cong tac))) or (cong thanh)) toan ban*.