The Meta keys and Attributes List section will help you to choose the required meta key or attribute on which the product information is stored. These meta keys or attributes will further be used in “Product Export Settings” for listing products on OnBuy from woocommerce as specified in the screenshot.

In this, you can search the product by its title as specified in the screenshot. 

For selecting the required meta key or attribute expand the Meta keys and Attributes List section enter the product name/keywords and the list will be displayed under that. Select the meta key or attribute as per requirement and save settings as specified in the screenshot: