If you received more than one text message, or response from the name that you search, then you will certainly obtain multiple instances. Narrow your search to a particular name, and a date range, or text in that conversation (see below).
Provided that you have Mail & Messages selected in System Preferences : Spotlight : Search Results panel, and have enabled your startup drive for Spotlight indexing, then the following Spotlight searches may help:
kind:chat from:viking created:>06/01/2020
which would show all messages from viking since June 1. A range would be created:mm/dd/yyyy-mm/dd/yyyy.
kind:chat from:viking contains:"call me"
Finds any message from viking containing the words call me.
When you press return on a listed conversation from your search, it will launch Messages at that conversation. You can hover your pointer over a conversation item to see the date/time float above it.