It would be very helpful if it were possible on the iOS implementation of Bitwarden to be able to search the notes field for login items.
Take a look at this: Search your Vault | Bitwarden Help & Support
Besides, this question / feature request already exists multiple times:
It’s nice to point out that this request has been outstanding since Apr 2019, but that doesn’t help get it implemented. Perhaps if a few hundred more of us post the same request it will get some traction.