Hope it is ok to add to this post.
I am having the same issue, my page title for the results page is “Blog” and I cannot seem to alter it.
I have used our code Trevor and it was accepted. (My site did not crash).
However it did not seem to make any changes to the results page or any settings.
The location of my functions.php page is inside my “appearance” tab under “Editor”
I have set the display results method as “As an archive”
I have included the page URL for your reference.
http://australianfurniture.org.au/members/find-a-member/
The search works great, just need to change the page title.
Would appreciate some help or direction.
Kind regards,
Colin