Perhaps you should try some spelling variations:
hien sach » dien sach, kien sach, thien hach
chinh sua » chinh su, chinh cua, chinh luan
sua nhung » cua nhung, qua nhung, chua nhung
tuong van » truong van, duong van, thong van
trong van » trong cac
toan ban » van ban
toan cao » toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - hanh chinh sua nhung ((tuong van) OR (trong van)) ((toan ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - hanh chinh sua nhung ((tuong van) OR (trong van)) ((toan ban) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - hanh chinh sua nhung ((tuong van) OR (trong van)) ((toan ban) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh chinh sua nhung ((tuong van) OR (trong van)) ((toan ban) or (toan cao))*.