If your administrator has 18.104.22.168 Set up Contending Line Items & Sell-Through Reports up for you, you can run two different DFP report different Google Ad Manager reports right out of ADvendio.
1. Contending Line Items Report
Open the related list for campaign items and click on the line item link. Then use the button Contending Ads to open the report.
Make sure that you have submitted it to DFP to Google Ad Manager before using the reports. You can verify this by checking if the Adserver ID Order ID and Ad Id are set.
A report similar to this will open:
Don't forget that both reports can't work if you have not yet 4.8.1 Submitted your Order to DFP to Google Ad Manager!