Could you tell me how to get my page to appear like the following picture where there are sub-categories under the title?
Hello, Such type of search result is shown automatically by Google. We can't do much in it. If we talk about image you have posted, Then you can see "Books", "Kindle Books" etc as a subcategories because they are searched mostly on Amazon. So let your site searched, After some time result will be same as you want.
