When searching within the Conversations tab, the TextUs system will lookup any message content within the individual chat windows and present you with the matches.
Note: searching in Messages does not search the actual Contact information, just the message content. If you're looking for a specific Contact to send a Message to, click the Contacts tab at the top to search in the Contacts area.
Once you have selected a found Message, you can scroll through the Conversation window's history to locate the matching information. The found search will be highlighted green for easy viewing!