Hacking pastebin?`

Ok it's not really hacking... you got me. But I have a question about pastebin.

I recently came upon some very valuable notepads, which I stored on pastebin. Curiosity led me to google a section of the notepad, and to my surprise I found a pastebin with about 3/4 of the notepad removed.

I'm wondering if there's any way to search for pastebins the original poster might have posted. I really don't know much about the site.