ขอแนวทางในการใช้ textbox และ Checkbox multi ด้วย AJAX ครับ

<input type="text"   id="search" value="1">
<input type="checkbox" name="chk1"  id="chk1" value="1">
<input type="checkbox" name="chk2"  id="chk2" value="2">
<input type="checkbox" name="chk3"  id="chk3" value="3">

//Getting value from "ajax.php".

function fill(Value) {

   //Assigning value to "search" div in "search.php" file.
   $('#search').val(Value);

   //Hiding "display" div in "search.php" file.

   $('#display').show();

}

$(document).ready(function() {



   $("#search").keyup(function() {

    
       var name = $('#search').val();

        
       //Validating, if "name" is empty.

       if (name == "") {

           //Assigning empty value to "display" div in "search.php" file.

           //$("#display").html("ไม่พบข้อมูล");
           $("#display").load(location.href + " #display");
           

       }

       //If name is not empty.

       else {

           //AJAX is called.

           $.ajax({

               //AJAX type is "Post".

               type: "POST",

               //Data will be sent to "ajax.php".

               url: "ajax.php",

               //Data, that will be sent to "ajax.php".

               data: {

                   //Assigning value of "name" into "search" variable.

                   search: name

               },

               //If result found, this funtion will be called.

               success: function(html) {

                   //Assigning result to "display" div in "search.php" file.

                   $("#display").html(html).show();

               }

           });

       }

   });

});

<div class="row gutters-sm" id="display">
            <div class="col-12">
<?php
//Including Database configuration file.

include "config/config_inc.php";

//Getting value of "search" variable from "script.js".

if (isset($_POST['search'])) {

//Search box value assigning to $Name variable.

   $Name = $_POST['search'];


//Search query

    //$Query = "SELECT tb_profile.* FROM tb_profile WHERE th_name LIKE '%$Name%' or th_sname LIKE '%$Name%' ";
    $Query = "SELECT tb_profile.*,tb_contact.*,tb_data_identity.* FROM tb_profile 
    LEFT JOIN tb_contact ON (tb_profile.id_card =tb_contact.id_card)
    LEFT JOIN tb_data_identity ON (tb_contact.id_card =tb_data_identity.id_card)
     WHERE th_name LIKE '%$Name%' or th_sname LIKE '%$Name%' or phone_num LIKE '%$Name%' or blood_type LIKE '%$Name%' ";

//Query execution

   $ExecQuery = MySQLi_query($con, $Query);

//Creating unordered list to display result.


   //Fetching result from database.

   while ($Result = MySQLi_fetch_array($ExecQuery)) {

       ?>
               <div class="card cardmobi">
                            <div class="card-body ">
                                <span class="a"><small><?=$Result['position_number']?></small></span>
                                <span class="a"><small><?=$Result['position_now']?></small></span>
                                <span class="a"><small>สังกัด:</small></span>
                                <span class="a"><button class="depart btn bnt-sm btn-success"><?=$Result['department']?></button></span>
                                <span class="rankName"><small style="color:gray;">ยศ ชื่อ นามสกุล <br/><?=$Result['rank'];?> <?=$Result['th_name'];?> <?=$Result['th_sname'];?></small></span>
                                <img src="assets/img/img_profile/<?=$Result['id_card']?>.png" class="cardround"/>
                            </div> 
                        </div>
                        <div style="height:4px"></div>
        <?php

            }}
        ?>