Search by Category/Author

I often find that I sometimes want to search for text in books limited to a particular category, author or series, especially when searching for a word or name that might appear in many unrelated books. The underlying implementation would be relatively easy since it is just a simple restriction on the already implemented search feature. Most of the work would be figuring out how to present this in the UI. Here are some possibilities:

• A category-specific search could simply be added to the available actions in the menu shown when viewing category items.
• Add "advanced search" to list of options shown when you type search text (currently the list is "my items", "store", "google", "wikipedia", "dictionary", "goto". This would bring up a dialog that would let you limit the search by category, author, and other available attributes.
• Add ability to specify keywords in search area, as in "Darcy author:Austen".
• When searching from inside a book that is within one or more categories containing more than one book or search options for each category, e.g. "fiction", "currently reading". When there is more than one book by the same author, the author could be added to the list.
• For Author searches, you can already sort results by Author and scroll to the page for the Author. This could be tedious if you have many books on your Kindle and get a large number of hits. Instead, after the results are shown, you could hit the menu button again to get options to filter the results.