I've found a fair numbers of past references in the forums to fuzzy search in the 1P app, but as far as I can tell it's not actually there. While it would be great to have a really top-notch fuzzy search, just some basics (like matching with/without hyphens) would be a really great start.
The place I notice this almost daily is when I try to log into my T-Mobile account. The name is "T-Mobile" and the URL is "my.t-mobile.com". In pretty much every other app I can think of, just typing "tmob" would immediately match that login. But on both Mac and iOS that is definitely not the case. If I don't include that darned hyphen every time, it'll never find the login.
1Password Version: 6.8.3
Extension Version: 4.6.11
OS Version: 10.13 Beta (17A362a)
Sync Type: 1P Family