In MyRepChat you can search for messages in your Messages history.
From the Dashboard click on Messages and then you will want to click on the spyglass to search:
You will then see the right panel open up with a search bar.
You can now enter a word or phrase that you are looking for. This is a "Contains" search. In the example we used the word "Hello":
You are then returned ANY message that contains the word "Hello".
Some things to know:
Because this is a contains search, what you search for must be in the exact order of what is in the message. For example, if I were to search "Hello Derrick", I will only be returned messages that have the phrase "Hello Derrick" in it. It would NOT return a message that says, "Hello this is Derrick" even though it has the two words that are in the search box.