Autocad DWG files in search results

It seems like AutoCAD is not a recognized file format for SharePoint Search. Can you run specific powershell listed in URL below to make it parsable and see if it helps.

https://docs.microsoft.com/en-us/sharepoint/search/add-or-remove-a-file-type-from-the-search-index#proc1

To enable parsing of a file format using a built-in format handler

1. Verify that the user account that is performing this procedure is an administrator for the Search service application.

2. Start a SharePoint Management Shell on the server that hosts the content processing component.

3. At the Microsoft PowerShell command prompt, type the following commands:

   Copy

   $ssa = Get-SPEnterpriseSearchServiceApplication
   Set-SPEnterpriseSearchFileFormatState -SearchApplication $ssa FormatID $TRUE

   Where:

   FormatID is the identity of the file format.

   $TRUE enables the format handler to parse the file type.

4. Restart the SharePoint Search Host Controller service to apply the changes:

   • Open a command prompt window on the server that hosts the content processing component. On the Start menu, click All Programs, click Accessories, right-click Command Prompt and then click Run as administrator.

   • To stop the SharePoint Search Host Controller, type this command: net stop spsearchhostcontroller