Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thiet anh » thuyet anh, thien danh, thich anh
thien anh » thien danh, tien anh, thien thanh
chinh can » chinh ca, chinh ban, chinh cau
can nhung » canh nhung, cam nhung, ban nhung
van thanh » ban thanh, van tuan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet anh) or (thien anh)) - hanh chinh can nhung cong ((dan than) or (van thanh)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet anh) OR (thien anh)) - hanh chinh can nhung cong ((dan than) OR (van thanh)) cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet anh) or (thien anh)) - hanh chinh can nhung cong ((dan than) or (van thanh)) cap*.