1. Highlight Google Special Offers
Google special offers (merchant promotions), are the promotions you see next to products or merchant sites on Product Listing Ads and on Google. Merchants can use to promote store or product sales, which is an easy way to increase conversion and click-through rates, drive traffic to your site, and differentiate your listings.
2. Use Google Consumer Surveys
Like Google Special Offers, Google Consumer Surveys(Google Consumer Ratings) have been around for quite some time (since 2012), and are a useful tool for online advertisers.
3. List All of Your Products on Google Shopping
Once you cut a product from your data feed you are removing it from Google search. Even if that product converted poorly, you've now obliterated it from the face of Google. It can't be found on Google search. Ever.