Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu nganh » vien nganh, hieu manh, nghiep nganh
hiem ngan » kim ngan, viem gan
chinh tai » chinh tri
tai nhung » thai nhung, thi nhung, tai hung
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
toan cao » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu nganh) OR (hiem ngan)) - hanh chinh tai nhung cong dan ((toan tap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hiem ngan)) - hanh chinh tai nhung cong dan ((toan tap) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu nganh) OR (hiem ngan)) - hanh chinh tai nhung cong dan ((toan tap) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) OR (hiem ngan)) - hanh chinh tai nhung cong dan ((toan tap) or (toan cao))*.