Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
than cau » phan cau, than cap, thanh chau
toan cau » 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 - ((thanh trung) or (thanh tung)) cua dung cong dan ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((thanh trung) OR (thanh tung)) cua dung cong dan ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((thanh trung) or (thanh tung)) cua dung cong dan ((than cau) or (toan cau))*.