All the other No-Trade documents can be turned in for Faction Points for the factional missions (100 FP each), cash for the neutral missions (483 credits), or kept as decorative items. You only need to search these locations until you find the appropriate document. Search each location thouroughly, and if no item anywhere in that location is searchable, you may need to talk to the initiator again to get the mission. Any Item looted from a container with the 'open' option is invalid. The container will have 'search' in the radial menu.
They will give you three places to look to get the No-Trade document they need. Imperial and rebel contacts will only talk to Combatant or Special Forces representatives of their faction. To enter this dungeon you must first talk to one of the 9 NPC quest givers listed in the missions for Imperials, Rebels, and Neutrals throughout this article.