for the below code i got the response below step 1 shows i'm after
          that little confuse at filter the response like below step 2:

           Map<String,String> test = new Map<String,String>();
           Map<String,String> samp= new Map<String,String>();
            Set<String> orderList1 = new Set<String>();


      for(String first : customsettingValues.keySet()){
                  String firstValue = samp.get(first);
                for(String second : test.keySet()){
                    String secondValue = SelectedValues.get(second);
                       if(firstValue.equals(second)){

                              listofrecords.add(secondValue);
                               System.debug('listofrecords:::---------'+listofrecords);

                  }
                }
              }

            step 1 :I got the response like below

             test
             test,test@gmail.com
             test,test@gmail.com,9999999999

             step 2 :Insted of that how to get the response like below

             test
             test@gmail.com
             99999999999