I have a model Group:

```
public class GroupModel
{
    [Key]
    public int GroupModelId { get; set; }

    [Required]
    [MaxLength(50)]
    [DataType(DataType.Text)]
    public string GroupName { get; set; }

    [Required]
    public virtual ICollection<FocusArea> FocusAreas { get; set; }

    ...

```

And a model Focus:

```
public class FocusArea
{
    public int FocusAreaId { get; set; }
    public FocusEnum Focus { get; set; }

    public List<ApplicationUser> ApplicationUser { get; set;  }

    public virtual ICollection<GroupModel> GroupModel { get; set; }

public enum FocusEnum
{
    Psych,
    Medical,
    LivingWith
}

```

Group and Focus has a many-to-many relationship. My Controller is receiving:

```
public ActionResult GroupSearch(string[] focusSelected) // Values possible are Pysch, Medical and LivingWith
{
    List<GroupModel> groups;

    ...

```

Problem: I want to select the groups that have all the focus that are inside the `focusSelected` array.

What I've tried:

```
groups = groups.Where(t => t.FocusAreas.Where(x => focusSelected.Contains(x.Focus))).ToList()).ToList();

```

Obviously not working. Does anyone have another idea?