I think it’s not so good at short terms, or when the spelling is really wrong.
For example this butchered Jugg spelling does still find the right page:
Nicknames should work, as long as the nickname is written somewhere on the page of the item (eg, staying with Jugg, it finds that on a search because it’s on the page):
Though it’d be nice to have redirects, so we could tell it to send people searching for Jugg directly to the relevant page.