Restore only certain documents from backup

Some documents in one of my applications have been deleted by mistake. Is there any way to restore them from the backup, and how? If yes, I need step by step clear instructions since I am gonna do that for first time.
Important: I need only certain documents, not the whole database.

Thank you

Restore whole database in separate instance…then export the doctype records that you want to restore-back into csv file.

Import this csv into your working erpnext instance…