Is there any way to retreave 14 summissions that I deleted accidentally a few hours ago?

Hi,

Unfortunately, once a submission is deleted, it is completely removed from our system and cannot be recovered. 

If you had email notifications associated with those submissions, you may be able to recover the data from your email history:

http://www.jotform.com/help/293-How-to-view-all-your-form-Email-History

Other than your notifications, there is no log of your submissions once they are deleted.