Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
khong cong » thong cong, khong cang, chong cong
tranh cua » doanh cua, manh cua
cua khong » hua khong, cua phuong, cua thuong
cong hoan » cong hoa, dong hoa, cong san
hoan phan » hoa phan, toan phan, doan phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((((dieu hanh) or (chieu sach))) or (trieu tinh)) - canh tranh cua khong cong hoan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((((dieu hanh) OR (chieu sach))) OR (trieu tinh)) - canh tranh cua khong cong hoan phan tu.
• Adding a wildcard symbol may retrieve word variants: doi ((((dieu hanh) or (chieu sach))) or (trieu tinh)) - canh tranh cua khong cong hoan phan tu*.