Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
cong tuan » cong tan, cong luan, cong thanh
dung cong » dung trong
chi sach » chinh sach, chieu sach, co sach
sat phan » sat nhan, vat phan, xuat phan
phan cau » phan dau, phan cac, phan tu
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - thanh cong tuan ((nhung cong) or (dung cong)) sat phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - thanh cong tuan ((nhung cong) OR (dung cong)) sat phan cau.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - thanh cong tuan ((nhung cong) or (dung cong)) sat phan cau*.