I put the itype constraint to OpacHiddenItems of systempreferences.
Opac says that the result of the scan is not found if itype constraint finds the first page.
There are actually 375 results.
When I activate the OpacHiddenItems profile, it should give 260 results.
But, the result is not found because the first 20 results are also included in itype OpacHiddenItems.
From the description this sounds like a duplicate to bug 23923 - search looks like there are no results, because of OpacHiddenItems hiding the first page. Please reopen if am mistaken.
*** This bug has been marked as a duplicate of bug 23923 ***