Best way to set all applicable flags?

Classifiers getClassifiers(string s) {
    Classifiers c = new();
    foreach (var enumVal in Enum.GetValues(typeof(Classifiers)))
    {
        if (s.Contains(enumVal.ToString())) c += (int)enumVal;
    }
    
    return c;
}

Classifiers c = getClassifiers("CTR HI LAG");
Console.WriteLine(c); // HI, CTR, LAG

[Flags]
enum Classifiers
{
    LO = 1<<0,
    HI = 1<<1,
    LFT = 1<<2,
    RIT = 1<<3,
    CTR = 1<<4,
    LAG = 1<<5
}