Intentionally The Google advanced search page has been updated with a new design, and as usually old search options have been removed from the new page. On the new advanced search page, you are not allowed to search for the similar pages nor you can find those pages which link to that specific page.
the removed tools would consist the options like:
(i) Find pages similar to the page
(ii) Find pages that link to the page
Here we have both screen shots old and new one please check both and figure out which one looks cool:
Even for a long time the link command has not been accurate and for this reason Google removed it. although it does work as link:www.example.com but again it doesn’t get accurate so the decision to remove it from the advance search page seems valid