Are there any iOS apps in which you can take a picture of a physical page and find words within that picture?

I need to find words in my textbook for school without having to read all of it. I need an application where I can take a picture of the page and it will find the word I need by typing it in. If not can someone please create this app.

I think this app can help
https://itunes.apple.com/...64834?mt=8