Using Google's Advanced Search allows you to exercise more control over your Internet searches.
Guidelines for evaluating websites:
When searching online using search engines like Google, the sheer amount of information can be overwhelming, and the vast majority of what you find will not be helpful to you for the purposes of academic research. Wading through all the bad information to find the good is not feasible. Use [site:] to target information you know will be useful to you by specifying which website or type of website you're interested in exploring.
For example, if I wanted to access information on US trade policy from government websites, you would type:
[US trade policy site:.gov]
If you wanted to look for information specifically from the White House, you can specify an entire website:
[US trade policy site:whitehouse.gov]
This works for newspapers, as well.
[US trade policy site:nytimes.com]
If you want to look at government information regarding Brexit, then you would use