Verbose text in advanced search was wrong.
Wrong field was used in case of GE or LE operators.

Change-Id: I5b67354ccd06162092c8e525af85b46fdaf1d406
Reviewed-on: https://git.eclipse.org/r/35577
Tested-by: Hudson CI
Reviewed-by: Bruno  Koeferli <bruno.koeferli@bsiag.com>