Toi bo no vao program Calibre de convert ra docx, nhung program noi la " This book is locked by DRM" Toi muon nho ban Decoder this book. Hoac chi toi cach nao co the Decoder no. Di nhien khi mo no ra doc thi no van binh thuong nhung khong the convert ra docx hay text duoc. Sorry vi noi khong ranh de ban khong hieu. Cam on ban that nhieu!!!