found this:  https://quickbooks.intuit.com/learn-support/en-ca/reports-accounting/how-to-get-a-report-that-shows-...

Have you taken a look at the Expenses by Vendor Summary or Expenses by Vendor Detail reports? If not, I'd start there. Each of these show the company's total expenses with the vendors and the detail report gives you a more in-depth look at where those totals are coming from. You can run either of these reports for the time period you need and export or print them for your comparison.

This method worked for me...I was looking for what I spent for the year with a particular vendor.  With a total.  This did it.  I found this report ... Reports >Company and Financial >Expenses by vendor Detail.  I am using Quickbooks desktop 2018