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
san tai » sang tai, ban tai, san bai
han tai » hang tai, nhan tai, toan tai
van tai » von tai, van tuan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh chinh cua nhung cong ((san tai) or (((han tai) OR (van tai)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh chinh cua nhung cong ((san tai) OR (((han tai) OR (van tai)))) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh chinh cua nhung cong ((san tai) or (((han tai) OR (van tai)))) cau*".