Lost applications

So I bought this MacBook Pro in Summer of 2011 for college, and the following summer had to reset it due to some error that AppleSupport couldn't figure out. I then noticed that I had lost iPhoto and iMovie, but since I didn't use them, I wasn't worried about it. When I bought this for college, I was given these apps free.

Is there anyway to get them back? I know it's 3 years later, but I have to try... any help is appreciated.