To search for a project, you can click on the 'Project' item on the menu bar, before selecting 'Manage Projects'.
On this page, you can search for your project's name and summary from the search box. Once you've found the project you're looking for, clicking on its name would bring you to the 'Edit project 'page. Here you can update the details of your project, and click on the 'Save project' when you've done making the updates.
If the project does not have any worksites linked to it, a 'Delete Project' link would be displayed in the footer bar, and clicking it would delete the project.