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
chinh cua » chinh ca, chinh sua, hinh cua
trong dao » truong dao, trong dam, trong dan
cua dung » cua dang, cua dong, qua dung
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 chinh cua dung trong 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 chinh cua dung trong dao van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (((chieu xanh) or (chieu sach)))) - hanh chinh cua dung trong dao van ban*.