Make sure when you are searching Google and other search engines, you specify that you are looking for higher-quality websites. Wikipedia is not considered a reliable source, although the articles in Wikipedia may lead you to original sources that you can use.
Set your internet search up so that it will only include education sites (.edu) in the results list. Just add site:.edu to the search box like this:
You can also limit your internet search to Australian websites by using this same method but this time using the country domain (.au). Below are a couple of examples of how to search for Australian websites that mention certain phrases: