For our web app, which will use Amazon's API as a basis for some of the site's main interactions, we required the ability to do a generalized search of Amazon's products and return results based on relevancy. The expectation was that their API would work exactly like their actual site's search.
Unfortunately it does not. For instance, querying "joy of cooking" does not return a link to the famous cook book, but to some food processor. Contrarily, on the actual site, one would see the book isn't just first, but it and any derivations occupy the top 5 or so results.
Is there a way of getting this level of relevancy search from Amazon's API without specifying a node to browse through? We need to be able to search everything at once, and the API seems very limited on parameter sets.