[Tracker] Matching criterion for "software"

[Stefano Facchini <stefano facchini gmail com>]

Hi all,

in /usr/share/applications I have among others:
* virt-manager.desktop
  Name: "Virtual Machine Manager"
* virtualbox.desktop
  Name: "Oracle VM VirtualBox"
  GenericName: "Virtual Machine"
* gnome-boxes.desktop
  Name: "GNOME Boxes"
  GenericName: "Simple virtual machine viewer/manager"

I can't understand why
  $ tracker-search --software virt
gives only
Software:
  file:///usr/share/applications/virt-manager.desktop (Virtual Machine
Manager)
and
  $ tracker-search --software box
gives nothing!

What is the matching criterion? (I already checked that the .desktop
files are all indexed). Tried with Tracker 0.12.6 and git master.

On the other hand, searching for "virt" in GNOME shell overview gives
all the three applications above, while searching for "box" gives GNOME
Boxes and VirtualBox

Cheers

-- 
Stefano Facchini <stefano facchini gmail com>