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