Go to Edit → Advanced search or tick the Magnifying glass icon. The % sign functions as a wildcard: “W% Shakespeare” will match “W Shakespeare”, “W. Shakespeare” and so on.
Feel free to explore, since advanced search can be used in numerous ways; below are a couple of suggestions.
To create a new file with your most recent imported items:
By searching for labels, you can find related references in your library, for example those that relate to a specific topic.
Select My Library, then in the tag window at the bottom of the left side menu you will find all the tags that are used. Click on the tag to see all the references it is associated with.
You can also search for the tag in the search box. Find the tag and click on it and those citations will appear in the middle panel. You can also search for all tags in Advanced Search → select Tag as the search criterion → enter the name you are looking for in the search box → Search.