All versions of a document are available in your organization's document register to maintain a complete document history.
When you choose to show document history, all previous versions of documents in the search results list are also shown. The current version is shown in bold text.
Refining your search to specific documents is a good way of keeping the results lists at a manageable length.
If you need to you can restore a previous version of a document. This is useful when a document has been updated with the wrong information.