Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh doanh » hang doanh, chinh doanh, doanh doanh
thong cong » trong cong, tong cong, thong thong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
doanh cua » doanh luan
nhung don » nhung van, nhung bo
dang cong » dung cong
anh van » anh va, thanh van, doanh van

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 chiet tach - hanh doanh cua ((((nhung don) OR (thong cong))) OR (dang cong)) anh van ban~.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh doanh cua ((((nhung don) or (thong cong))) or (dang cong)) anh van ban*.