Why doesn’t AdSense earn me any money?

Thanks for your note. Based on your name (in Arabic) I am going to venture a guess that you aren’t based in the United States, nor are most of your visitors coming from the United States. That’s a problem, because while AdSense is available in a number of languages, the majority of advertisers are not only based in the United States, but they also target US-based customers.
Why? Because if the company doesn’t ship to customers in Australia, Germany, South Africa or Pakistan, they won’t want to advertise to those customers.
As Google explains in its discussion forums, “No country is banned from Adsense, however there are some restrictions, for example some languages are not supported. India, China and ‘certain other countries’ – not specified – have a six month period before they can be accepted into the program.”
Keep in mind that Google seeks AdSense publishers that have the best quality sites so that when the system matches adverts to the published content, the advertisers are going to be satisfied with the traffic produced by their ad campaigns. After all, the money that you earn originates with the advertiser who is paying to drive traffic to their site, visitors who will hopefully convert into buyers.
Now there’s another possible answer to what’s going on with your site, of course, and that’s simply that it just doesn’t have enough traffic to produce any revenue. If you’re only seeing 5-10 visitors each day and are going to end up with a 0.5% click-thru rate, half of whom are going to be ineligible due to either not matching the geographic profile of the advertiser or just being rejected due to paid-click matches, that means that to see ten valid clicks it’ll take almost half a year!!
(how did I calculate that? If we assume 5 visitors per day, that means we’d see 200 visitors in 40 days. 0.5% of them click on an advert, so we need 80 days for a single click, and if half are ineligible, we’ll need 160 days for a single valid click to earn $0.08 or so. Clearly not a good way to earn any money at all)
Anyway, perhaps you can write a bit more here about your specific situation, so I can offer a bit more advice? Specifically, where are you based, where is your site hosted, what’s the theme or subject of the site, and how things are going now that some time has passed?