Combining Three columns In Search

 {
                    data:'first_name', name:'first_name',
                    render: function(data, type, row, meta) {
                        return `
                        ${row.first_name} ${row.middle_name} 
                        ${row.last_name} 
                    `
                    }, className: 'dt-left, dataTableLeftAlignment', searchable: true, sortable: false
 },

I am displaying first_name , middle_name , last_name in one column but it searches for first_name only , how can I let it search by first_name,middle_name,last_name ?