Add fields to be seached in order listing template

In the order listing template "display > views > order > listing" the search results seem to only work on some fields. How do you choose what fields will be searched/filtered?

Hi,

All the fields should be used for the search function.
Please give us more details about the required fields.

To add more values in the searchMap, you can edit the file "administrator/components/com_hikashop/views/order/view.html.php" and in the "listing()" function edit the value of "$searchMap".

Here are some more details:

I have created a text field:

Table is order and column name is ordername.
Customer can enter this as part of the checkout (works fine).

I have made this field display in the "display > views > order > listing" template. If I do a search in the search box on that page no results display for ordername field even when I do a search with a word that exists in an order.

Oh I am referring to a logged in customer using the front end template not the administration template.