B2b work order search with sales order number

Summary:

In the work order screen, is there way we can search with dff name?

Business case: We are using B2b manufacturing work orders created from Sales order.

At time of wo creation , we populate DFF in Work order with sales order number using service mapping

User want to search with sales order number in WO screen once wo is completed.

the standard field "document number" became blank after wo is completed