How to Google 'http://' or 'https://'

If you only searched the http site,

 - "https://"

You can use the .

For example, if you search for http Facebook:
facebook-"https://"

How about this?

allinurl:https://* or allinurl:http://*

Hmm. At the back of the page, you'll see the result of ignoring the query option saying, "You may need to ignore allinurl."

The result of ignoring the query option seems like there's nothing we can do anymore...