Perhaps you should try some spelling variations:
chinh cam » chinh ca, chinh can, chinh cau
hung cong » nhung cong, hung cuong, phung cong
doc hieu » hoc thieu, hoc hien
cam hung » cac chung, cam nang, van hung
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van
van tai » von tai, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) sach - hanh chinh cam hung cong dan van tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sach - hanh chinh cam hung cong dan van tai*.