Need help from you saved search experts.

I need a transaction saved search that looks at the items on an order, and if any of the item on the order has a specific value, list all of the items. Or the reverse; if not item on the order has that value, don't include that Order in the search.

I can filter down by that item value, but that only gives me the item lines that have that value. I need if any line item has that value, give me all lines, otherwise no lines.

The use case is, we are trying to calculate the shipping costs for orders that contain any item over a specific length. If any order contains a long item, what was the shipping cost and amount for all item shipped on that order.