It is a text search by title, description and short description. if you want to exclude any word add a prefix "-".
Options:
- Min Length - minimum number of characters needed for search
- Placeholder
- live search - The filter does an instant text search and shows available products below the text search field
- Search by taxonomies- The ability to search also by the name of attributes, tags and categories
- Meta key - Ability to expand the data on which the search will be done. In this field, you can insert a metadata key (custom fields). Most often for stores, this is a search by SKU(meta key: _sku)