Similar to Search campaigns Display Select campaigns also bid on keywords. However for Display Select campaigns the data, which is used to determinate the bid, consists of a Search and Display share. Therefore both keywords and keyword matching websites are advertised.
For a better optimization we recommend you to use a Search and a Display campaign instead of one Display Select campaign. By using two separate campaign types instead of one, Adspert receives more freedom for the optimization and thus can achieve a better overall result.