Sage 50 US. Search for inventory items using "description" keywords, inside the sales order.

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Can anyone please help find out ALL the ways possible to search for inventory items using "description" keywords, inside
the sales order. 

Say, there are hundreds or thousands of ID's, there is no way to know or remember them. But the users know the descriptions of the items they sell, and need to search for items in sales order by description. How can this be done?

The inventory items have descriptions in them. When you are on the sales order page and try to type in the item that you are trying to sell, and type part of the description, and click search/find, nothing pops up. The search is not narrowed to the keyword of the item description. Does anyone have some experience with this? Please help us understand this more and the different ways we can make that work. Is there some sort of Global setting somewhere?