Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
hanh dinh » thanh dinh, hinh dinh, hanh tinh
dung cong » dung trong
dinh cua » dinh cuu, sinh cua, dinh cu
cua dung » cua dang, cua dong, qua dung
cong dao » cuong dao, cong dan, dong dao
dao van » do van, dang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (((chieu xanh) or (chieu sach)))) - hanh dinh cua dung cong dao van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (((chieu xanh) OR (chieu sach)))) - hanh dinh cua dung cong dao van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (((chieu xanh) or (chieu sach)))) - hanh dinh cua dung cong dao van ban*.