Another issue I have (don't understand) is that the param rsz => 'small', returns only 4 search results from the page and 'large' returns 8. How would I see all 10?
For the number of results pages, quoting the googledocs:
Note: The maximum number of results pages is based on the type of searcher. Local search supports 4 pages (or a maximum of 32 total results) and the other searchers (Blog, Book, Image, News, Patent, Video, and Web) support 8 pages (for a maximum total of 64 results).