How to add more custom field in Linked Product of Woocommerce

Thanks to all developers at StackOverflow.

I want to add more fields in Linked Product Section of Woocommerce. The fields should be similar to Upsell/Crosssell.

My code so far:-

add_action( 'woocommerce_product_options_linked_product_data', 'woocom_general_product_data_custom_field' );

 woocommerce_wp_text_input( 
    array( 
      'id' => '_upsizing_products', 
      'label' => __( 'Upsizing Products', 'woocommerce' ), 
      'placeholder' => 'Upsizing Products',
      'desc_tip' => 'true',
      'description' => __( 'Select Products Here', 'woocommerce' ) 
    )
  );

In the above code i need the combobox, For example when you type 3 characters in input box, it will show a list of matched products which can be selected. Similar to Upsell / Cross Sell.

Please anyone help me implement this custom field. Thanks in Advance.

Edit: Anyone?