Is it possible to password protect a page with blog section and then use a search block to have it search all of the blog posts?

Site URL: https://www.mckeepownall.ca/

We are trying to have our employee policies behind a password protection and then have a search function within the policies. I have created a page and password protected it and then add s search block that searches certain ages only (collections). The collection is of blog posts of each section of our manual but the search isn't working so now I am wondering if you can even use a search behind password protection? 

Password pages eventually disappear from all search engines if they were accessible without one first.  Site Search engines will ignore password protected pages, and I suspect that is true even if a search block is on  a password protected page. 

3 hours ago, hmcpherson said:

I am wondering if you can even use a search behind password protection? 

The built-in search only indexes collections that are not password-protected. If you add a password to the blog page, none of the blog posts in that blog will be searchable.