## Display Expansion

[Display Expansion](https://support.google.com/google-ads/answer/7193800) allows your
Search campaign to use any unspent Search budget to show ads on the Google
Display Network, aiming for a similar cost-per-conversion. This feature is
compatible with AI Max for Search. To enable Display Expansion, turn on the
`targetContentNetwork` option in
[`NetworkSettings`](https://developers.google.com/google-ads/api/reference/rpc/v26/Campaign.NetworkSettings):

    "networkSettings": {
      "targetGoogleSearch": true,
      "targetSearchNetwork": true,
      "targetContentNetwork": true
    }

Other optional components for Search campaigns include audience targeting,
location targeting, and negative keywords, which can be added as campaign or
ad group criteria.