Search String Help.

Hello All :)

Hope someone can help me with this. I am trying to think of a way I can
search for web sites that display Adsense on their website?

In fact ones under specific themes like Travel Sites who have adsense on
them ?

And a good tool I can add a word to and it will tell me related words I
probably wouldn't know my self.

Any Ideas people? Hope you can help, Still lurk this board lots lol!

Cheers :)

James