You can search for messages from specific callers. If you have subscribed to Premium service, you can also search for keywords in the message transcriptions.
1. From the Visual Voicemail Inbox, Archive, Custom, or Trash folder, tap the overflow menu and select Search.
2. Type the search text in the search field. As you type, items that are found will be displayed in a list. To listen to one of the messages from the list, just tap on that message.