I want to use Google Adwords program for advertising my blog.

Main income source of my website is Google Adsense Program.

I invest money for Google Adwords.

Can I get good return from Google Adsense program?

yes you can get a good return from adsense, but if you don't learn how to build a site that attracts targeted traffic then you won't make much from AdSense.

it depends on your CTR

I have adsense, hou can I get more vizitors on my web???

Just don't make yet another MFA site

What you're doing is what I believe is commonly called Adsense Arbitrage. That is, your goal is to buy low cost traffic and convert it into high-cost clicks. For a blog, I don't really see this as a feasible option since the main goal of many blogs is to attract visitors to their content, not push them away through links.

Again, the goal would be to target relatively low volume, obscure keywords you can get for near the minimum possible, and convert those into high paying clicks. Your CTR has to be superb for this to work and make a profit.

In all likely hood this won't work - the same terms that have a high payout in the Adsense program may be the same one you have to bid on to get traffic so the clicks will be expensive. Plus only a small percent will even click an Adsense ad. Try submitting articles, blog directories, rss, links if forums etc to drive traffic.