Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
thien danh » thien dang, thien thanh, thien chanh
thien anh » tien anh, thien thanh, thien chanh
chinh sua » chinh su, chinh cua, chinh luan
sua khong » cua khong, hua khong, suat thong
cong tang » cong thang, cong tan, cong lang
tang van » dang van, hoang van, trong van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) or (thien danh)) - hanh chinh sua khong cong tang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (thien danh)) - hanh chinh sua khong cong tang van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (thien danh)) - hanh chinh sua khong cong tang van ban*.