Make sure that your Amazon products are directly related to your hub.
Make your Amazon product listing relevant to your hub content. And place them in locations where the user can easily relate to the text and follow the product link. HP now offers in-line linking for Amazon products, that's a really effective way to sell Amazon products.
If you need further help drop me an email.
I'm not making money from Amazon either. But I feel (I cannot guarantee) more traffic and more commercial hubs will lead to Amazon conversions. A quick description of the Amazon products you're showing MIGHT help too...
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.