I can't find package libreoffice3

i try to find libreoffice3 package in synaptic, i want to update my version So actually I am stuckk by step 3 by"De-Installation of a Previous Version of Community-Supplied LibreOffice for Linux" I can’t find libIr eoffice3.I also would like to know which packages must i delete too.
. I am using ubuntu raring ringtail. I would like to update libre office to 4.1 and currently i have libre office 4.0

Ubuntu 13.04 came with LibreOffice 4.0 installed by default (source), so there shouldn’t be any such package as libreoffice3 in your system.

The instructions you are following have not been updated to the latest versions of LibreOffice. They are still very good if you take into consideration that fact.

Another important detail is that, for Ubuntu, nowadays you can use the Ubuntu Software Center instead of Synaptic.

Nevertheless, I would recommend you do it from the command line (open a terminal with [Ctrl]+[Alt]+[T]):

sudo apt-get purge 'libreoffice*'

Finally, if you encounter further problems with your LibreOffice installation, it might be one known bug for Debian/Ubuntu. Follow the instructions on the release notes (previous link).