Like all search engines, this one has its quirks.  Don't type the full title into the box; flower of northumberland will find both versions for you.  It's often a good idea to enclose your keywords in square brackets so the search knows that it's a phrase, but in this case you don't need to.  You can also use the new "Digitrad and Forum Search" facility on the main Forum page; this will also find references in discussion threads.  Have fun!

Malcolm