Multicolumn search with "OR" column

tfe2012

I want search by multiple column

for example:

Head: id1 id2 id3 id4
row 1: 1 2 3 4
row 2: u5 u6 u7 u8

Then search phrase is "u"

result is : row2

Then search phrase is "5"

result is empty

var that = this.api().columns([0, 1]);

                    $( '#that' ).on( 'keyup change', function () {
                        if ( that.search() !== this.value ) {
                            that
                                .search(this.value, true, false)
                                .draw();
                        }
                    } );