Flow's template search previously used an exact match search that often led to searches resulting in no results.
As part of this release, the template search has been improved, making it far easier to find the correct template. For example, searching "low stock" returns templates related to low stock and out of stock, regardless of whether words exactly match. Word mispellings and some additional languages are also handled.
Try out the changes by going to the Flow app and clicking "Browse templates" in the top navigation bar.