Within the Exchange platform, there are two search fields. They allow you to search different for different things. 

"Search" located on the dashboard screen, searches across all of the Exchange products (across each brand) 

For example, if you search earrings here, you will see earrings in all brands on the platform. 

"Keyword Search" allows you to search products across multiple brands so that you can quickly find the brand you want to shop for. 

This will allow you to search over product name, product number, color name, color code, UPC/SKU. Depending on what text you enter here, the system will return multiple matches or an exact match.