Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
khong cong » thong cong, khong cang, chong cong
thien anh » thien danh, tien anh, thien thanh
chinh sua » chinh su, chinh cua, chinh luan
sua khong » cua khong, hua khong, suat thong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan 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 chanh)) - hanh chinh sua khong cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (thien chanh)) - hanh chinh sua khong cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (thien chanh)) - hanh chinh sua khong cong tan van ban*.