OK, you want to use two search properties at the same time: name and type. Use name as you would for searching for files, and specify "file folder" for type. That way, the search is limited to folders rather than files and folders. The foldername property, on the other hand, gives all sorts of files that happen to be contained in a folder of the specified foldername, which I assume is not what you want.
For example, searching for all folders with "goose" as a word in the name, you would go to a desired parent folder that could contain all the folders that you are searching for, and type into the Search box at the upper right of the window:
name:goose type:(file folder)
Alternative to type:(file folder) is kind:folder.