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.
If you've worked with quest dialogue even a small amount, using the feature brought about in Skyrim called "Dialogue Views", you have probably experienced the huge mess that is linking your dialogue topics. When you attempt to link them together, the links will often go in incredibly weird directions - like AROUND your branch 3 times - before looping back to a topic literally right next to the topic you're linking from. And it makes you want to punch your computer. However, I've found out how to fix it.