Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
chua dong » cua dong, ha dong, huy dong
hua khong » hoa khong, cua khong, hoac khong
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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 tranh ((((cua tong) or (chua dong))) or (hua khong)) cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - canh tranh ((((cua tong) OR (chua dong))) OR (hua khong)) cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - canh tranh ((((cua tong) or (chua dong))) or (hua khong)) cong dan van ban*.