Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
cong thanh » dong thanh, cong trinh, cong tan
chinh cua » chinh ca, chinh sua, hinh cua
cong danh » cuong danh, cong dan, cong khanh
cua hang » cua dang, cua nhung, cua cong
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (thien hach)) - hanh chinh cua hang ((cong danh) OR (cong thanh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - hanh chinh cua hang ((cong danh) OR (cong thanh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (thien hach)) - hanh chinh cua hang ((cong danh) OR (cong thanh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (thien hach)) - hanh chinh cua hang ((cong danh) OR (cong thanh)) toan ban*.