Make Gnome 3 search work with file indexers like tracker

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Indexing files is not new, tracker and other indexing frameworks, including the classic locate command existed for a while. Since the conception of gnome 3 I thought that the quick search (Super and type words), would actually integrate with indexers. But it never worked for me, for example, I type the name of the file that is known to be in some subdirectory of home and the "No result" message appears.

The questions is:

1) Is gnome search supposed to work with any indexers out of the box? For example tracker or locate.

2) If not, is there a way to allow gnome search to use the indexers?

3) Is it a good idea, or I can expect a CPU clog from the indexers?

This is what I have available in Fedora 22:

$ sudo dnf search gnome | grep search
gnome-search-tool.x86_64 : Utility for finding files for GNOME
gnome-do.x86_64 : Quick launch and search
gnome-activity-journal.noarch : Browse and search your Zeitgeist activities
gnome-shell-extension-calc.noarch : A simple calculator in the search overview
gnome-shell-extension-sustmi-historymanager-prefix-search.noarch : Use PageUp