Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
thong cong » trong cong, tong cong, thong thong
chinh sua » chinh su, chinh cua, chinh luan
sua thong » suat thong, xuat thong, suat trong
so champa » co champa, hoa champa
cong so » cong san, cong hoa

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) or (chieu xanh)) - hanh chinh sua thong cong so champa van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu xanh)) - hanh chinh sua thong cong so champa van.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu xanh)) - hanh chinh sua thong cong so champa van*.