Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
san chang » dan chan, van khang, san chay
ban hang » ngan hang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan 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 ((san chang) or (ban hang)) cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh chinh ((san chang) OR (ban hang)) cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh chinh ((san chang) or (ban hang)) cong san toan tap*.