You can't restore the deleted content. But you can retrieve in one of the below ways:
Page Versioning:
1. Create a version for your page
2. Revert this back to previous version (not the one you've created) and then copy the component if exits to another page
3. Now, you can revert back to the version you created and copy the component
Get it from Publish servers:
If you have published this page with the component then you can package only the component content (not the entire page) and bring it back to author.