Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
chinh quan » chinh luan, chinh quyen, chinh ngan
quan trong » gian trong
cong tan » cong tac, cong san, cong thanh
tan ban » toan ban, tang ban, van ban
ban cau » bang cau, ban can, van cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - hanh chinh quan trong cong tan ban cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (thien hach)) - hanh chinh quan trong cong tan ban cau*.