Perhaps you should try some spelling variations:
hung cong » nhung cong, hung cuong, phung cong
doc hieu » hoc thieu, hoc hien
chinh ca » chinh ta, chinh va, chinh tai
cong dan » cong san, cong tan, huong dan
ca hung » cam hung, ca chung, cay hung
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 ca 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 ca hung cong dan van tai*.