SIMGALLERY RANKING isn't being displayed on the "module search" on my backend (no published, unpublished or Trahsed)

Hello,

'SIMGALLERY RANKING module' isn't being displayed on the "module search" on my backend (no published, unpublished or Trahsed) but i can view it on the "extension manager"
Where can i found the "SIMGallery Ranking module" to publish it?
Many Thanks for your help
Best Regards
Arnaud

System Information
SIMGALLERY 5.01
PHP Built On Linux info 3.0 #1337 SMP Tue Jan 01 00:00:00 CEST 2000 all GNU/Linux
Database Version 5.1.73-1+deb6u1
Database Collation latin1_swedish_ci
PHP Version 5.4.44
Web Server Apache
WebServer to PHP Interface cgi-fcgi
Joomla! Version Joomla! 3.4.4 Stable