mate-search-tool from openSUSE:Backports:SLE-12-SP4 project
Select Your Operating System
Add repository and install manually
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Backports:SLE-12-SP4/standard/openSUSE:Backports:SLE-12-SP4.repo zypper refresh zypper install mate-search-tool