Just to clarify;
Go to google search engine home page. Before searching for anything, look at the top right hand corner. There will be a link with "search settings" written on it. Click on "search settings"
You will now be on a page with "global preferences" on the top. Scroll down to "safe search filtering", and click on the dot next to "do not filter my search results".
Now scroll to the bottom of the page, and click on "save preferences", a pop-up will appear just click OK.
OK?