GNU nano is a simple terminal-based text editor. Though not as powerful as Emacs or Vim, it is (relatively) easy to learn and use, and has been part of a standard Ubuntu installation for years now.
Ctrl+w is show as the shortcut to initiate a simple text search, but frustratingly enough, it isn’t immediately obvious to jump to the next search result. As it turns out, to do this is simple enough: Alt+w will actually repeat the search, in other words jump to the next search result!
You’ll also notice when entering a search term at the start of a search operation, pressing the up and down arrows will allow you to cycle between terms previously searched on!
Oh, and to toggle searching backwards as opposed to forwards, you’ll need to press Alt+b.
And now you know.