When you're searching in Google, you can limit your search results by specific domains such as .edu (academic websites), .gov (government websites), .mil (military websites), .org (non-profit websites).
How to do it: after your search terms just add a colon : and then the domain you want to see in the results. Websites from these domains tend to have reliable content - but always use the evaluation techniques for any website!
Example search: nanotechnology market site:.gov -- this search will only show .gov websites
"Evaluating Websites." Library Learning and Resources, 5 March 2020, Prince George's Community College, https://pgcc.libguides.com/c.php?g=60038&p=385689
"Google Search Tips - Limit by Domain." Evaluating Websites, 24 May 2018, DVC Diablo Valley College, https://dvc.libguides.com/evaluating_websites