It's probably the keywords that you are using on your page. They probably don't have a high payout. The keyword used within the content pages will determine what kind of ads that are pulled up. It would be good if we can see your website
honestly i can not understand your details.if you need any help, there should be proper details for us...otherwise how could we able to help you...?
Earning with Google adsense program is a game.. The more you post, the more you have chances to earn! Quality posting is a must