NetworkTargetList networkTargetList = new NetworkTargetList();
networkTargetList.setCampaignId(campaignId);
networkTargetList.setTargets(new NetworkTarget[] {
// Specifying GOOGLE_SEARCH is necessary if you want to target
// SEARCH_NETWORK.
new NetworkTarget(null, NetworkCoverageType.GOOGLE_SEARCH),
new NetworkTarget(null, NetworkCoverageType.SEARCH_NETWORK)});
CampaignTargetOperation languageTargetOperation = new CampaignTargetOperation();
languageTargetOperation.setOperand(languageTargetList);
languageTargetOperation.setOperator(Operator.SET);