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
cong bang » cuong bang, dong bang, hong bang
thoai cac » tai cac, thong cac, tho cac
tung vat » dung vat, tang vat, tung va
vat dung » van dung, va dung, viet dung
cong ban » cong san, cong tan, cong dan

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 tung vat dung ((cong ban) OR (cong bang)) thoai cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh tung vat dung ((cong ban) OR (cong bang)) thoai cac".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung vat dung ((cong ban) OR (cong bang)) thoai cac*.