Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
cong bang » cuong bang, dong bang, hong bang
cong san » cong tac
than cau » toan cau, phan cau, than cap
mang va » mang vua, hang va, dang va
bang va » hang va, ban va, trang va

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 ((mang va) or (bang va)) nhung ((cong bang) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((mang va) OR (bang va)) nhung ((cong bang) OR (cong san)) than cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((mang va) or (bang va)) nhung ((cong bang) or (cong san)) than cau*.