Ответ на "Is deleted BootCamp partition recovery become possible macOS Sierra?"You can take the help of a Mac data recovery software that provides deleted or lost BootCamp partition recovery features. Also, avoid using the Mac machine to make sure that no other files gets over-written on that Mac hard drive.
Ответ на "Which data recovery software recovers deleted MS Office file on macOS?"You can use TestDisk, Wondershare etc. Mac data recovery tools to recovers deleted MS office files like MS Word, PowerPoint, Excel, Access etc.
Ответ на "Data recovery from flash memory?"Data recovery from flash memory is possible only if you have not written anything new on your flash drive. After that, use some professional data recovery tools that can helps you in the recover of deleted data from flash memory.