Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
cua thuong » cua truong, cua phuong, ca thuong
hieu xanh » chieu xanh, hieu manh, hieu nganh
chinh cua » chinh ca, chinh sua, hinh cua
cac thanh » bac thanh, cach nhanh, ban thanh
doc hieu » toc thieu, hoc thieu, hoc hien
tac than » tac thanh, tam than, tac nhan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hanh chinh cua thuong cong ((tac than) or (cac thanh)) ma~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh chinh cua thuong cong ((tac than) OR (cac thanh)) ma*.