Your Permanent.org Public Archive is searchable via search engines such as Google or Bing.
If you search for your Public Archive in a search engine and it isn't immediately available, the search engine may not have indexed it yet. Unless this content is shared online through links on other websites such as blog posts, search engines like Google probably will not see it and index it. In the long run, we do plan to make content in Public Archive more accessible to search.
In the meantime, you can boost the visibility of your Public Archive yourself by sharing that link in places where people might be looking for it.