To Recover Deleted Documents in SharePoint use the following steps:-
1.Log in to the site as the site collection administrator.
-Your SharePoint administrator in IT can look up this account information.
2.Click the Settings gear icon and choose Site Settings.
-The Site Settings page appears.
3.In the Site Collection Administration section, click the Recycle Bin link.
4.In the Recycle Bin’s left navigation pane, click the Deleted from End User Recycle Bin link.
5.Click the items you want to restore and click Restore Selection.
-The items are restored.
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Hope this is helpful for you.