I recently came across a feature in the Creation Kit called "Find Text". It allowed you to search all of the objects, quest stages, dialogue, objectives and more in the Creation Kit to search for certain phrases or pieces of text. It's incredibly useful to me, as I'm often searching for a phrase - be it to implement voice, or bugfix the sentence I saw in the game - that I don't know the location of. It's quite easy to use - I detail its features in the following article.