Hi Shashikant,
You could replace the template grid with a list view, this has a ''no items found'' message by default when no results are found. If you do need the template grid (search) features but still want a “no items found” message, you could solve this by adding some custom styling.
The following CSS snippet will add a “No results found” message to all template grids when having no results to show:
.mx-templategrid .mx-templategrid-empty:first-child:before {
content: "No results found";
}
Hope this helps!