documents show up in /admin/search but not search

(from github.com/markcamos)
When I search in the admin console (System Info/Search) I see several dozen results

http://devel-fess/admin/searchlist/?lastaflute.action.TRANSACTION_TOKEN=…&q=optispray&search=Search

When I do a search using http://devel-fess/search/?q=Optispray&num=20&sort=

I get none.

Why the difference?

(from github.com/marevol)

http://devel-fess/admin/searchlist/

is a search result with admin role.

http://devel-fess/search/

is a search result with guest role.

(from github.com/markcamos)
Yes, to both questions above. What controls guest access to search results?

“Login Required” checkbox is not checked.

(from github.com/marevol)
See Permission.