I have already kept a specific ads in one month. But when i update my site, it go away. How can i get them again?
Don't update your site, Apart from that there's nothing you can do. Adsense in contextual, They base the adverts on what is on the page that they appear.
Well to this I say... you have to update your site. Content updates are critical to building a good site. But like stOx said, the ads are contextual. Ads will be displayed based on the content, so, different content equals different ads.
Of course you have to update your site. But he was asking how to get the same adverts that he got before he updated his site.
Apart from anything else, the ads that YOU see on your site are not necessarily the same as the ads other people see. Two people sitting next to each other in the same room could load your site at the same time and get different ads.
Adsense preview tool could know what kind of your ads display to foreigner. Australia Canada Both are different ads Download tools from official page https://www.google.com/adsense/suppo...c.py?topic=160