No LibreOffice Vietnamese langpack in CentOS 6.3

[root@localhost ~]# yum search libreoffice-langpack
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.vietoss.com
* extras: mirror.vietoss.com
* updates: mirror.vietoss.com
============================================= N/S Matched:
libreoffice-langpack =============================================
libreoffice-langpack-af.i686 : Afrikaans language pack for LibreOffice
libreoffice-langpack-ar.i686 : Arabic language pack for LibreOffice
libreoffice-langpack-as.i686 : Assamese language pack for LibreOffice
libreoffice-langpack-bg.i686 : Bulgarian language pack for LibreOffice
libreoffice-langpack-bn.i686 : Bengali language pack for LibreOffice
libreoffice-langpack-ca.i686 : Catalan language pack for LibreOffice
libreoffice-langpack-cs.i686 : Czech language pack for LibreOffice
libreoffice-langpack-cy.i686 : Welsh language pack for LibreOffice
libreoffice-langpack-da.i686 : Danish language pack for LibreOffice
libreoffice-langpack-de.i686 : German language pack for LibreOffice
libreoffice-langpack-dz.i686 : Dzongkha language pack for LibreOffice
libreoffice-langpack-el.i686 : Greek language pack for LibreOffice
libreoffice-langpack-en.i686 : English language pack for LibreOffice
libreoffice-langpack-es.i686 : Spanish language pack for LibreOffice
libreoffice-langpack-et.i686 : Estonian language pack for LibreOffice
libreoffice-langpack-eu.i686 : Basque language pack for LibreOffice
libreoffice-langpack-fi.i686 : Finnish language pack for LibreOffice
libreoffice-langpack-fr.i686 : French language pack for LibreOffice
libreoffice-langpack-ga.i686 : Irish language pack for LibreOffice
libreoffice-langpack-gl.i686 : Galician language pack for LibreOffice
libreoffice-langpack-gu.i686 : Gujarati language pack for LibreOffice
libreoffice-langpack-he.i686 : Hebrew language pack for LibreOffice
libreoffice-langpack-hi.i686 : Hindi language pack for LibreOffice
libreoffice-langpack-hr.i686 : Croatian language pack for LibreOffice
libreoffice-langpack-hu.i686 : Hungarian language pack for LibreOffice
libreoffice-langpack-it.i686 : Italian language pack for LibreOffice
libreoffice-langpack-ja.i686 : Japanese language pack for LibreOffice
libreoffice-langpack-kn.i686 : Kannada language pack for LibreOffice
libreoffice-langpack-ko.i686 : Korean language pack for LibreOffice
libreoffice-langpack-lt.i686 : Lithuanian language pack for LibreOffice
libreoffice-langpack-mai.i686 : Maithili language pack for LibreOffice
libreoffice-langpack-ml.i686 : Malayalam language pack for LibreOffice
libreoffice-langpack-mr.i686 : Marathi language pack for LibreOffice
libreoffice-langpack-ms.i686 : Malay language pack for LibreOffice
libreoffice-langpack-nb.i686 : Bokmal language pack for LibreOffice
libreoffice-langpack-nl.i686 : Dutch language pack for LibreOffice
libreoffice-langpack-nn.i686 : Nynorsk language pack for LibreOffice
libreoffice-langpack-nr.i686 : Southern Ndebele language pack for LibreOffice
libreoffice-langpack-nso.i686 : Northern Sotho language pack for LibreOffice
libreoffice-langpack-or.i686 : Oriya language pack for LibreOffice
libreoffice-langpack-pa.i686 : Punjabi language pack for LibreOffice
libreoffice-langpack-pl.i686 : Polish language pack for LibreOffice
libreoffice-langpack-pt-BR.i686 : Brazilian Portuguese language pack
for LibreOffice
libreoffice-langpack-pt-PT.i686 : Portuguese language pack for LibreOffice
libreoffice-langpack-ro.i686 : Romanian language pack for LibreOffice
libreoffice-langpack-ru.i686 : Russian language pack for LibreOffice
libreoffice-langpack-sk.i686 : Slovak language pack for LibreOffice
libreoffice-langpack-sl.i686 : Slovenian language pack for LibreOffice
libreoffice-langpack-sr.i686 : Serbian language pack for LibreOffice
libreoffice-langpack-ss.i686 : Swati language pack for LibreOffice
libreoffice-langpack-st.i686 : Southern Sotho language pack for LibreOffice
libreoffice-langpack-sv.i686 : Swedish language pack for LibreOffice
libreoffice-langpack-ta.i686 : Tamil language pack for LibreOffice
libreoffice-langpack-te.i686 : Telugu language pack for LibreOffice
libreoffice-langpack-th.i686 : Thai language pack for LibreOffice
libreoffice-langpack-tn.i686 : Tswana language pack for LibreOffice
libreoffice-langpack-tr.i686 : Turkish language pack for LibreOffice
libreoffice-langpack-ts.i686 : Tsonga language pack for LibreOffice
libreoffice-langpack-uk.i686 : Ukrainian language pack for LibreOffice
libreoffice-langpack-ur.i686 : Urdu language pack for LibreOffice
libreoffice-langpack-ve.i686 : Venda language pack for LibreOffice
libreoffice-langpack-xh.i686 : Xhosa language pack for LibreOffice
libreoffice-langpack-zh-Hans.i686 : Simplified Chinese language pack
for LibreOffice
libreoffice-langpack-zh-Hant.i686 : Traditional Chinese language pack
for LibreOffice
libreoffice-langpack-zu.i686 : Zulu language pack for LibreOffice

Name and summary matches only, use "search all" for everything.