Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
chinh cua » chinh ca, chinh sua, hinh cua
cua nhung » va nhung
tran tuan » tran xuan, tran quang, tran thanh
cong tan » cong tac, cong san, cong thanh
tran tan » tran van, tran thanh, trang 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 tieu xanh - hanh chinh cua nhung cong tan ((tran tuan) OR (tran tan))~.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh chinh cua nhung cong tan ((tran tuan) or (tran tan))*.