How name of the website displayed on Google Search Engine

Your client must have had 2 versions of the website, (with and without www). Or might just have migrated to the www subdomain.

Well, it seems that the website still isn’t properly redirected.

Check here: https://tinyurl.com/2xmctp9p

It should show 301 redirects here if you want that only URL (with www) to be visible in the search results.

You should verify your client’s htaccess files. If you can’t find the exact problem, contact the hosting provider for guidance.