Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
thanh dung » thanh duong, thanh tung, thanh hung
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hanh dung » anh dung, hanh dong, manh dung
doc hieu » toc thieu, hoc thieu, hoc hien
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, 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: doc hieu nganh - ((hanh dung) OR (thanh dung)) cua ((nhung cong) or (thong cong)) ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - ((hanh dung) OR (thanh dung)) cua ((nhung cong) OR (thong cong)) ban than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu nganh - ((hanh dung) OR (thanh dung)) cua ((nhung cong) or (thong cong)) ban than cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - ((hanh dung) OR (thanh dung)) cua ((nhung cong) or (thong cong)) ban than cau*.