This is simple!
Step 1) Go to Products in the menu on the left hand side
Step 2) Choose Products -> List All
Step 3) Choose whether you would like to search for Active, Inactive or All products
Step 4) In the search bar, start typing the name of the product you are looking for.
Step 5) If you cant locate the product, try using the Filters option for a more detailed search.
Step 6) I the product does not appear, it means you need to add it.