Perhaps you should try some spelling variations:
thieu nganh » hieu nganh, trien nganh, nghiep nganh
thong cong » trong cong, tong cong, thong thong
anh bang » anh hoang, anh quang, tinh bang
anh dang » anh dong, anh danh, anh nang
anh dung » anh dong, anh huong, sach dung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu nganh - ((anh bang) or (((anh dang) or (anh dung)))) he thong cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu nganh - ((anh bang) OR (((anh dang) OR (anh dung)))) he thong cong dan than ban*.