To turn off SafeSearch on Google, use the Settings link available at the bottom right corner of the Google.com home page and then navigate to the Search Settings page. This page allows you to enable or disable the SafeSearch filter along with other useful options.
When you navigate to the Search settings page, the first option on this page is the SafeSearch Filter. Click on the checkbox to uncheck this setting and click on the Save button at the bottom of the page. This should ensure that the search results do not contain explicit or inappropriate content when you perform the next search. However, this is not 100 percent safe, as there may be some results that still sneak through even though they are inappropriate.