Isn’t the title a bit confusing? I really had no idea about how to explain what this article is about exactly without writing a title that is 20k characters long.
So, let’s try to explain what it is about here.
If a potential customer on your site tries to search for a product it may happen that they won’t find anything. Maybe because the keyword used is too specific, or maybe just because you don’t have what they want. They will land on a page with a message telling them that no products can be found.
How can you try to sell something anyway from that page?