In order for customers to find your products on Amazon, it’s important to provide Search Terms they might use when searching for what they want to buy. The following Amazon article contains the Tips and Best Practices on how to use the Search Terms effectively: Using search terms effectively.
Shoppingfeed allows you to easily manage the Search Terms (Keywords) on your Amazon listings.
You can do that by accessing the Field Mapping tab of your Amazon channel. From there, you will have multiple ways on how you can add the Search Terms to your listings.
Do not forget to click the 
button at the bottom of the page to save changes.
Option 1.
Assign a “Static field” to the SearchTems field and type in the value that will be added to all your Amazon listings;
For example:
Option 2.
Map an existing field (coming from your storefront or created in Shoppingfeed) with the SearchTems field.
For example:
NOTE:
If you want to add different Search Terms for different product segments (categories, collections, product types, etc.) you can do so with the help of our Rules Tool.
We use {global_keyword} field in the Rule result here since it has been mapped with the SearchTerms field in the Field Mapping tab of the Amazon channel already.
IMPORTANT: You can also manage the Product Titles, Bullet Points, Descriptions, etc. on your Amazon listings in a similar way!