i am not asking about Google search results , i am asking about domain google.com results??
Maybe you could have made that more clear in the original question!
Google will assume that you want to use it's engine for the country you are in,
as the search results are localized for that country. For example I am in Turkey, so if I search for google.com I am taken to google.com.tr
However, my target market is outside of Turkey so I have set my browser to open in the main google.com site. I also check my rankings at google.co.uk
but that's just for me, you can view whichever country version of google you want to.