For the TurboTax website, you simply need to make sure you are on the TurboTax.ca site instead of the TurboTax.com, which is our American counterparts.
To keep your search engine preferences close to home, this would be found in the browser "settings" of any web browser; go to the search engine settings, from there you will be able to bring your search results closer to home by clicking on the country you would prefer to come up first in your search engine. Please note: location of search engine preferences varies for different web browsers.