Ability to scan more manga

I tried to add One Piece 3-In-1 manga to my collection through camera but it didn't even recognize my manga. I searched for One Piece #1 on the search bar to add the book to my collection and when I looked it up I saw the 3-In-1 manga in the app and I didn't even know that it was already been added just it didn't recognize it. I wanted to add it to my collection but it doesn't have the option for me to add it to my collection. These are the books that I wanted to add.