Advanced Sql to Dataset query

 private void button1_Click(object sender, EventArgs e)
        {          

            List ArStr = new List();
            ArStr.Add("h");
            ArStr.Add("e");

            List DS = new List();
            DS.Add("hi");
            DS.Add("hello");
            DS.Add("bye");


            var query = from c in DS
                        where SearchParamExist(c, ArStr)
                        select c;
           
            foreach (string Data in query)
            {
                Console.WriteLine(Data);
            }           
        }

        private bool SearchParamExist(string c, List ArStr)
        {
            foreach (string arStr in ArStr)
            {
                if (c.Contains(arStr))
                {
                    continue;
                }
                else
                {
                    return false;
                }
            }
            return true;
        }