Yes you can get back deleted form Responses
i know this is an old post but this answer is for anyone else looking for the same solution to a similar problem quite recently.
You might have some luck here- google has quite a good auto backup system when it comes to sheets
Login on your desktop browser for easier access
going by your screenshot -you still have 46 responses saved in a sheet someplace - if you want to know which sheet name click on that little green sheet logo on the right hand top corner of your google form on your phone - it will ask you if you want to change the location of your responses "dont click anything " just make note of the sheet name that you see auto populated there.
Go to your google sheets in your google drive account & select that sheet that your form is linked to.
Click on "file" on the Menue
Click on "Version History > See Version History "
let it load
on the right hand side of the page you will see the diffrent auto saves done by google sheets - it includes everything that was inputed onto the google sheets -all data including that of the form, since the last time you accessed it.
Just tick the option "see changes" you will see all the changes done across the sheet in each and every timestamped version.
when you found what you looking for -clcik on "restore this version"
take note this will restore your sheet back to the version you have selected based on the date & time of that auto backup you selected