Navigate to Dashboard > WoodMart > Header Builder > there edit your current Header Layout > in that you can edit the Search element and configure the available options related to it:
Secondly, you can go to Dashboard > Theme Settings > General > Search > there you can find options related to Search.
If you want to do anything else Try to edit the file at your own risk.
header-elements/search.php
Thanks for your reply. I want to change the search results page. When the client does not find anything, he only sees a message on a blank page – No results for your request. I would like to add contacts and offers to this blank page. Actually, that is why I am interested in where I can fix this blank page?
The Search Results template does not exist, because it is a normal archive (of products or posts). Therefore, I recommend you to use the WoodMart WooCommerce Layouts builder.
There is a Condition available as “Shop search results” to add for the Custom Archive Layouts made under the Dashboard > Layouts which you can use to apply your Custom Layout design to the Search Result page: https://prnt.sc/PQanWcUQpz68