Checkbox AND – OR

Hi,
I have an e-commerce: http://www.lasupergomma.com
I need to set up checkbox in OR when i search products.
I sell tyres for example: Tyre 225-50 R 17 Winter & Summer, for see winter tyres and summer tyres at the same time.

How is possible that ? I try to insert in shortcode operators=”OR” but it doesn’t work.

Thanks You

https://wordpress.org/plugins/search-filter/