Exclude Data Models in BI Search Results

We don't want end users to see data models in BI. We have followed the typical approach of saving data models in a Data Models folder where the permissions on the folder are Traverse only and permissions on the data models are Read. Users can't navigate into the Data Models folders to see data models in the BI hierarchy, but when they search for BI objects these data models are returned in the search results. Is there a way to exclude these data models from search results other than giving them an unrelated name?