Search on labels on AODocs homepage

On the AODocs homepage (My libraries) you can structure (filter) all libraries via labels (and nested labels). However when using the search functionality (both 'Search libraries' and 'Search documents across libraries') you aren't able to search on those labels.

Use case:
Our libraries have the name of the client we are working for. Some of them belong to a holding or a group so we use labels to 'bundle' all the companies belonging to this group/holding. These names are not part of the library title nor do they appear in metadata.

Therefore it would be very useful to add these labels onto the search functionality.