To find a task inside the projects (any view) use the search button in the right corner near the project name.
  1. Open the project panel and select a project
  2. Open the project and click the search button to the right under the task creation panel
  3. In the search field that appears, type part of the task name – only tasks matching your search will be displayed on the screen
  4. To show all tasks again, click 'Cancel'
If done tasks are hidden, they won't appear in the search results. To enable search through the done tasks, make them visible using the appropriate button at the end of the task list.
Important! You can't change the order of tasks in the search results. To rearrange tasks, first, cancel the search.