What you are looking for is a Function Expression. You will need the type for the Where
clause, I am going to assume that your type is Project.
If you are using linq to sql you will need to construct an Expression
//assuming Project is type
Expression<Func<Project, bool>> expr = p => p.Title == "Test" && p.Status == 0;
If you are using linq to objects then you can omit the Expression
//assuming Project is type
Func<Project, bool> expr = p => p.Title == "Test" && p.Status == 0;
Now you can use this in your where clause
myProjects = dataAccessHelper.GetMyDetails(id).Where(expr).ToList();
edit
With regards to your edit. You can't really pass in a string to do this with. Your best bet would be to pass in the "Test" and the integer for status, and then put those into the expression.
public virtual ActionResult MyProjects(int? id, string title = "Title", int status = 0)
and then
Func<Project, bool> expr = p => p.Title == title && p.Status == status;