Imma going to go try them
EDIT: Well they did not show up on the nominate list.
I believe if a map has recently been played that it does not show up on the nomination list for a few maps, this is to keep the map flow fresh (Unless I'm missing something on sourcemod)
You'll probably have more luck next map as I've added a bunch of other CSS maps to the list which have been posted in this thread.
Current CSS maps are
de_dust
de_dust2
de_piranesi
cs_office
de_inferno
de_port
cs_compound
cs_assault
cs_havana
de_nuke
cs_italy