Use the search function
If you are looking for a specific account that doesn’t appear in the list of user accounts, you can use the search bar, in the left-hand column of the page “Account Organization”.
NB: The search is executed dynamically, from the second character you type.
Display Blocked Accounts
If the account you are looking for does not appear in the list of results, it may be a blocked account. To check that, tick the “Display blocked accounts” box that appears above the search bar.
Blocked accounts appear as struck-through text in the list of results.
If the account you are looking for still does not appear in the search results, it may not exist. For more information, have a look at this article: