Untargetd adsense

Hi,

I'm deveoping a site and for experience of ads placement I tested to put some ad units on it, during devlopment phase. My site is based in PHP and MySql.
The strange behavior is that in some pages, the ad units just show that search box, though that there is plenty of keywords in meta tag keywords and in title.
Another strange behavior is that, when ad units apear they show ads for PHP related advertisers and for MySql advertisers. When I check the source code of the generated page and try to find MySql on it I don't find any MySql word on it.
And the only php related words in the source code is the links I have, that have php extension on it.

How can this happen?

How can I optimize the pages for targeted adsense?

Thanks,
JP

 

strange things

as for meta tags and their relevancy to adsense ads - it happens.
if i put new page on my site, with text, tags and so on - and reload it first time - google adsense ads are empty. it tooks from few hours to days to begin show correct ads.

and as for mysql and php ads - can you tell me your url? maybe it is also temporaly?

 

I Think you almost answer my question.
I don't have my page in an url visible to the web, is only in my local host. I tested in something like http://localhost.
Anyway, I can have an explanation for ads targetd to php, since some parts of the url have the word 'php' on it. But for MySql I can't understand.
Anyway, again, I think that I must have attention to the problem when I have published the site. Then, I'll wait that the adsense target my content, if adsense does not ttaget my content I'll request help from you.

Thanks,
JP