//Ignore the fact that the results include highlighted Wikitext instead of plain text. This is captured in T94870.//
As expected, searching for `intitle:functional intitle:programmin*` returns twelve results, the first of which is //Functional programming//:
{F108205}
Also as expected, searching for `intitle:functional intitle:prog*` returns twelve results, the first of which is //Functional programming//:
{F108207}
Unexpectedly, searching for `intitle:functional intitle:pro*` returns only one result, //Monad (functional programming)//:
{F108209}
Unexpectedly, searching for `intitle:functional intitle:pr*` returns no results:
{F108211}
The last two cases appear to be caused by `intitle:pr*` returning way too many results, so that the intersection with the top `intitle:functional` results is empty.