Perhaps you should try some spelling variations:
thieu nganh » hieu nganh, trien nganh, nghiep nganh
anh tang » anh bang, anh nang, anh sang
anh dang » anh dong, anh dung, anh bang
va thong » va thuong, va phuong, va cong
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 tang) or (anh dang)) ((va thong) OR (he thong)) cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu nganh - ((anh tang) OR (anh dang)) ((va thong) OR (he thong)) cong dan than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu nganh - ((anh tang) or (anh dang)) ((va thong) OR (he thong)) cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: toc thieu nganh - ((anh tang) or (anh dang)) ((va thong) OR (he thong)) cong dan than ban*.