You are a relative newcomer to Hubpages. Articles on the web can take several years to produce decent traffic levels and ultimately google impressions. I have been with Hubpages for two years and it took me at least a year before I saw anything more than a few cents in my Google Adsense account.
The key is to continue writing, continue to create backlinks to your articles and look into SEO techniques such as Long Tail and Key Words.
It takes a while to get some google adsense income but as you build a brand and reputation you will see an increase in your Google account!