How do I get the Lost Window or Tab while Composing?

 Sometimes when we are writing or composing some organic articles we mistakenly close the Chrome window due to which we lost our all the tabs or windows which are in Google chrome and we lost our all the Material which cause a Huge loss to us to Undo all the Tabs we can use a Shortcut Key:

                                                                    Ctrl+ Shift+ T 

                                           

                                                                       Thank You