Answered by Karen Burkardsmaier

If you just loaded documents for the first time, the easiest way to find them is to Browse documents and find them using Levels.

If your documents are in multiple levels, you can build a search query for "Document ID has a value," because all documents have a Document ID.

If you just added documents to a case that already has documents, you can build a search query for "Document Created Date on [select today's date].

For steps, see Working with the Browse feature and Working with Advanced Searches.