Search widgets

Hello
I am extremely new to this whole web making process. So any help that can be given in very simple terms would be greatly appreciated.

I am trying to add a search widget to my sidebar. I am trying to add the woocommerce product search widget.

However, it only seems to search through the titles on my website. I would like it to search through the tags I have meticulously included under each of my products for sale.

How can I make it happen? or is there a different type of search widget I need to use?

Thank you in advance for your help.