Advanced search with default search in laravel datatable

I implemented custom search facility to my project using laravel Yajra datatable package. after implement this feature default regex search function not working. I cannot identify the issue. please help me to resolve this immedietly. my code is,

javascript code in blade file

function search(){
$("#cus_cat_price_list_details").show();
    $('#cus_cat_price_table').DataTable({
        processing: true,
        serverSide: true,
        destroy: true,
        searching: true,
        ajax: {
            url: "",
            data: function (d) {
                d.cus_name = $('#cus_name').val();
                d.pro_id = $('#pro_id').val();
            }
        },
        columns: [
            { data: 'cus_cat', name: 'cus_cat' },
            { data: 'pro_no', name: 'pro_no' },
            { data: 'pro_name', name: 'pro_name' },
            { data: 'cash_price', name: 'cash_price', className: 'text-right' },
            { data: 'credit_price', name: 'credit_price', className: 'text-right' },
            { data: 'cus_cat_price_date', name: 'cus_cat_price_date' },
        ]
    });

 }

Controller

public function search(Request $request){

    $cusCatPriceList = DB::table('customer_category_wise_price_list AS ccpl')
    ->join('product as p', 'p.pro_id','ccpl.pro_id')
    ->select([
        DB::raw("'SR' AS cus_cat"),
        'ccpl.pro_no',
        'p.pro_name',
        'ccpl.cash_price',
        'ccpl.credit_price',
        'ccpl.cus_cat_price_date',
    ])
    ->whereNull('ccpl.deleted_at')
    ->groupBy('ccpl.cus_cat_price_id');

    return Datatables::of($cusCatPriceList)
    ->filter(function ($query) use ($request) {
        if ($request->has('pro_id') && $request->get('pro_id') != "0") {
            $query->where('ccpl.pro_id', '=', "{$request->get('pro_id')}");
        }
    })
    ->make(true);
}

via Chebli Mohamed