Internal Search Terms Comparision Engine


How can I match Google shopping ads incoming search terms to my website with 400k products and add them on a negative keyword list?

RIght now need to copy each search term and go to website search to see if the product exists or I have to add this search term in the negative list since there are more than 5000 search terms a day which I cannot check manually.

How can I achieve this using SeoToolsExcel If I have the .csv files of both products and search terms?