i recently make mch efforts at my site to make mney with adsense. finally i discovered it can ake much money if the site is designed properly to make google love it. this can be learned from the SEO basics. also promoting the site well is necessay to make vsitors. the most visitors i receive are from google but still are low.
You can submit your website to top bookmarking website to start receiving more visitors from search engines.
You can double or triple your earnings if you sell banner space directly...but you need much traffic.
Try to do seo for your site and you will get traffic then you will get more clicks and thats the great way to earning some bucks for your need using adsense
That's already good if you get visitors from google. That means you are within the zone where people still clicks the results from the search engines. Add more backlinks so that your site rise higher from the ranking. The more you rise from the ranking the more traffic you get. Also, don't forget that there are a lot of other ways to gain traffic aside from SEO. Article marketing, social bookmarking are just a few of those.