I want to find the list of all the tasks, because I created tasks that didn’t have projects but now I can’t locate them anymore… 
Hi @Nancy_Pham, the best way to do this is to use the Advanced Search and try to play with different criteria (team, project, assignee) to find your tasks. To search for tasks that have no project, follow the steps outlined by my colleague @Natalia in this other thread: Search for tasks that don't belong to a project - #2 by Natalia
Hope this helps!