In SharePoint 2007, using the lookup column to link to another list, we can only see this column. We have not had the opportunity to see other columns in the list of parents in the child list.
In SharePoint 2010, with reference a lookup column, we can choose to display additional columns along the lookup column.
Remember that the extra column is read-only which you cannot edit from the Child List
Here I have a column status as the search and the area code should allow the search screen. After activation, we have the output like this….