For example: A search in Australia and in international domain return different results. Note that the results from Australian search mainly results websites from Australian domain whereas international search displayed results depending on your country. For me, results are from India and sponsored ads from Bangalore.
Change Google Search Displaying Results from Specific Country Or Websites
Use http://www.google.com/webhp , http://www.google.com/ncr or http://www.google.com/intl/en instead of your country domain like http://www.google.ca/ for Canada.
Change your preferences from here http://www.google.com/preferences.
If you like search for websites from different country then either go to country specific Google like http://www.google.co.nz for NewZealand. Search For your country specific Google home by clicking flags here.
You can append country name after the search query for websites from specific location. For Example enter flowers India in search box.
Bookmark this link: http://www.google.com/webhp . This will always show results from Google.com no matter where you are.