Playing Simple PHP Dom Parser In Advance

I want to do something advanced with PHP Simple HTML DOM Parser but can't understand how to do so..

What I want to do: Suppose we are getting some url from here

foreach($result->find('a') as $element)
$element->href

and now i want to get its content as plain text but note that I am going to fetch full content from that pages.

Suppose this script has a variable called $sn = 'linkin park song'; - is there any way to fetch lines from those pages which have the keywords from $sn

If you don't understand what I want to do then here is a example.

Suppose $sn = 'Google 2012 Earning Report'; so PHP SIMPLE DOM PARSER will get some url from $element->href , such as:

http://www.dailytech.com/Google+Q2+2012+Earnings+Rise+11+Percent+Deals+with+Falling+Ad+PricesMotorola+Issues/article25221.htm

It will fetch plain text from this url, which match $sn :

Google's Q2 2012 earning are looking good despite certain issues ...
Google's latest Earning Report is result of its ability to better target...
链接地址: http://www.djcxy.com/p/29854.html

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