You can view promo campaign reports after your content starts displaying. Click on View statistics on the campaign page. If you check these statistics regularly, you will know how well your content is performing to bring users to your site.
To get detailed statistics on all your campaigns and evaluate the effectiveness of specific keywords and ads, use Report Wizard.
For example, you can go to the “Search queries” report to see queries that triggered showing your collections. To prevent Yandex.Direct from serving ads for non-relevant searches, use negative keywords. You can add them on the page where you edit your campaign or ad group.
Read more information about campaign statistics.