Yes, you should be able to, although you'll have to do each of those 30 folders separately.
From the *Restoring specific files or folders* section of
Mac 101: Time Machine
+You can use the timeline on the right side of the window to reach a certain point back in time (the timeline shows the times of all backups on your backup disk). If you don’t know exactly when you deleted or changed a file, you can use the back arrow to let Time Machine automatically travel through time to show you when that folder last changed.+
+You can also perform a Spotlight search in the Time Machine Finder Window search field to find a file. Simply type the Spotlight search field and use the back arrow to have Time Machine search through your backups to find what you are looking for.+