Hi I just want to check with your guys before start my PPC campaign. Google care below 2 keywords as one keyword or 2 different keywords ? London Hotels and Hotels London
if you put them in your adgroup as a broad match, they'd be treated as one - and could also show for a lot of other phrases that mean the same or similar things that you havn't actually put in your keyword list. Put them as a phrase or exact match, and they'd be 2 different keywords - as a phrase match 'London Hotels' could show for 'cheap London Hotels' or 'London Hotels in June'; whereas 'Hotels London' could show for "Cheap Hotels London Kings Cross". In exact match your keyword only shows when someone searches for exactly what you put in your keyword list in exactly the order you put it, with no other words.
I think that london hotels and hotels london will be treated as two independent keywords: "london" and "hotels", which I agree with magda. You should put the quotation mark (") before and after the word to make it into exact word like magda said, should be "london hotels" and "hotels london" It will be treated as the exact word as you mean.