Twitter for iOS finally rolls out a new search button on every user profile. This search option is visible in the top right corner of a user's profile. Before this update, you had to manually search for tweets from a user through the main search tab. And you needed to type out "from:" before a user's name and then search for the tweet you want.
This feature is also accessible in your profile. So, if you're looking to surface a specific tweet of yours, this is an easy way to do just that.
Source: 9to5Mac