Do you mean the individual items you listed as expenses on a schedule C? If you entered each of those items separately with a description and an amount, you should see the detail on one of your schedule C supporting worksheets. Sign into your account (online versions) and save the 2016 pdf. Then scroll the document for the Schedule C worksheet.

Yes, and I did download last year's tax return pdf, but it doesn't show the individual entries under a category, it just shows the category name and total $ for that category.  So if I listed 12 different things under the "Supplies" category last year (e.g. paper, a desk, pens, computer, etc), there doesn't seem to be anywhere to see those individual itemizations anymore.  I really need to see them.

Shoot. I don't think you can get the detail if you didn't save a copy with the worksheets. Going forward, always save your TurboTax file with all the worksheets. The default is just the required forms/schedules. But why do you need the specific detail? Are you concerned about how much was claimed? Is the deduction being questioned?