Search Tools and Filters will appear on your results page after you've searched. With them you can narrow down your search to maps, videos, books, social and much more. It's a great time saver. Remember to click on More and on Search tools for more options.
Under More you will be able to limit your results to videos, news, blogs, discussions, apps, etc.
Under Search tools you can specify that you want to see pages from South Africa only, pages published within a certain time frame, or you can limit your search results to a specific reading level.
For more help on Search tools and filters go to Google Support.
Use the specialized searches above the search box. Selecting any of these will narrow down your search to just images, videos, etc. Click on More for more specialized searches and other features.