As DrByte mentioned, you can find Products on the Product Listing using the:
ID:##

There is also the Reports ... Products Purchased ...

You could click on Quantity Sold of the Product in the Products Purchased Report to locate all customers who purchased a given product ...

Or, to find the product, there are two questions in the upper right corner for additional searches:

Search for Product(s) - Delimited by commas

Search for Products Name/Model