Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
dung cong » dung trong
tran van » luan van
ban hang » ngan hang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh tran van ((nhung cong) OR (dung cong)) ((xuan toan) OR (ban hang)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh tran van ((nhung cong) OR (dung cong)) ((xuan toan) or (ban hang)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh tran van ((nhung cong) OR (dung cong)) ((xuan toan) or (ban hang)) cau*.