The search bars that show up on this site on Switch just run a regular Google search, they shouldn't be able to bypass any restrictions. It opens a Google URL with the query passed in, such as: https://www.google.com/search?q=test+search
You can also see them if you change your PC user agent to match the Switch. If it's bypassing some restrictions there is probably something else going on there, either at the DNS, browser, or PC level.