I want it to parse http://www.google.com/search?hl=en&q=filetype:pdf+[keyword user types]&aq=f&aqi=&aql=&oq=&gs_rfai= and display results on my page I read something here:http://raven-seo-tools.com/blog/2962/how-to-parse-rss-feeds-with-googles-feed-api How can I do it?
Do I understand you right that you want to actually parse the google results and display them on your page? If so then he link you have given doesn't do anything for you. In the example above they use the google api to parse RSS feeds not Google results. If you want to scrape google search results then you need to use curl and scrape them yourself.