To access this option, search for something in the Twitter search box, then click on the ⋯ option and select Advanced search from the menu. Advanced search window will pop-up on your screen. Use twitter.com/search-advanced Advanced search to quickly access this option. Scroll down to the “Accounts” title, then type any username (e.g. wikihow) in the “From these accounts” box. If you want to customize your search results, use the other options from the Advanced search menu. You can see the blue “Search” button on the top-right side of the box. Click on the “Latest” header to see the recent Tweets from the account. That's it!
Move to the Advanced search option. Type a username. Click on the Search button. Now you can see the tweets from your favourite user.