Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
dang hanh » dang thanh, dang van, dang hung
dung cong » dung trong
ho chinh » hoc chinh, cho chinh, hoa chinh
ban hanh » ban hang
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chinh sach - ((dang hanh) OR (ban hanh)) va ((nhung cong) or (dung cong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chinh sach - ((dang hanh) OR (ban hanh)) va ((nhung cong) OR (dung cong)) dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chinh sach - ((dang hanh) OR (ban hanh)) va ((nhung cong) or (dung cong)) dan than cao".
• Adding a wildcard symbol may retrieve word variants: ho chinh sach - ((dang hanh) OR (ban hanh)) va ((nhung cong) or (dung cong)) dan than cao*.