Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
quan duong » tuan duong, quan dong, qua duong
hoc thieu » toc thieu, hoc hien
quan dung » quang dung, qua dung, quan dong
cong lang » cong vang, cong luong, cong quang
toan cao » toan tap
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 - hanh chinh ((quan dung) OR (quan duong)) cong lang ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh chinh ((quan dung) OR (quan duong)) cong lang ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - hanh chinh ((quan dung) OR (quan duong)) cong lang ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh chinh ((quan dung) OR (quan duong)) cong lang ((toan cao) or (toan ban))*.