Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
chua dong » cua dong, ha dong, huy dong
cua dung » cua dang, cua dong, qua dung
dan phan » doan phan, dan chan, dam phan
van phan » van phong, van thanh, luan phan

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 - canh manh ((cua dung) or (chua dong)) cong ((dan phan) OR (van phan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - canh manh ((cua dung) OR (chua dong)) cong ((dan phan) OR (van phan)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - canh manh ((cua dung) or (chua dong)) cong ((dan phan) OR (van phan)) cac".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - canh manh ((cua dung) or (chua dong)) cong ((dan phan) OR (van phan)) cac*.