If you want print out few text messages
then you can take the screen shots and email the pictures to your computer for
printing or simply use Airdrop if you have a mac.
What should I do if I want to print out some important text messages from iPhone?
Actually its not that much difficult to print out text massage from iPhone, you can use some professional tools to print your iPhone Text Messages, such as iStonsoft iPhone Backup Extractor and iStonsoft
iOS Transfer work is well!!!