Individual column searching (select inputs) several meanings in filter

czaa

Hello. Let suppose that I have the table at 2 columns: name and profession. And then I want use 'Individual column searching (select inputs)' on the profession column. Ok, but I have one problem: Individual column searching can filter only by ONE meanings. And is it possible to filter by more then one meaning? For example, I want that my table show peoples who has profession teacher and manager.

And that is my code

$(document).ready(function() {
    $('#sch').DataTable( {
        "lengthMenu": [[50, -1], [50, "All"]],
        initComplete: function () {
            this.api().columns().every( function () {
                var column = this;
                var select = $('<select><option value=""></option></select>')
                    .appendTo( $(column.footer()).empty() )
                    .on( 'change', function () {
                        var val = $.fn.dataTable.util.escapeRegex(
                            $(this).val()
                        );
 
                        column
                            .search( val ? '^'+val+'$' : '', true, false )
                            .draw();
                    } );
 
              column.cells('', column[0]).render('display').sort().unique().each( function ( d, j ) {
    if(column.search() === '^'+d+'$'){
        select.append( '<option value="'+d+'" selected="selected">'+d+'</option>' )
    } else {
        select.append( '<option value="'+d+'">'+d+'</option>' )
    }
} );
                
                
                
            } );
        }
    } );
} );