Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
tieu sach » chieu sach, dien sach, te sach
dung cong » dung trong
ban thanh » ban hanh, ban hang
van toan » van tuan, van tan, van thanh
lang va » lang van, hang va, lang ha
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - nhanh lang va dung cong ((van toan) OR (ban thanh)) cau~.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - nhanh lang va dung cong ((van toan) or (ban thanh)) cau*.