Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh doanh » hanh doanh, chinh doanh, doanh doanh
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
doanh cua » doanh luan
dung cong » dung trong
pham cau » phan cau, pham ca, pham can

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - canh doanh cua ((thong cong) or (dung cong)) san pham cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh doanh cua ((thong cong) OR (dung cong)) san pham cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh doanh cua ((thong cong) or (dung cong)) san pham cau*.