If autodiscovery doesn't work, you can manually configure the search engine. : Go to the Manage search engines page in settings. Click Add under "Site search". Enter a name and a keyword (e.g., os ).

Go to > Search engine > Manage search engines and site search .

The site should appear under "Inactive shortcuts" or "Recent"; click to add it. Mozilla Firefox : Navigate to the website. Click the Address Bar or the three dots in the address bar.

In the URL field, enter the site’s search URL, replacing the search query with %s . : Open Settings > Search .

Select the option (often marked with a green plus icon). Manually Adding a Search Provider