How do you search for a particular dialogue line that a NPC says?

[Question2]

For some reason, when you use the filter in the CK, it wont show any dialogue lines at all. They only seem to be visible if you go directly into a NPC/Quest and open up the respective dialogue window. But there is no search option in the dialogue window, and TES5 edit only seems to allow searching via form and editor IDs, not whatever is in the "name" field (which is where the dialogue text is located).

 

Im trying to find the particular line where Arngeir says "Dragonborn, it is you." after you hit him with the unrelenting voice shout. He says it outside of the conversation window before he force greets the player. Dialogue lines outside of the conversation window are normally in the "misc" dialogue tab, but this one doesn't appear to be there, or anywhere that i can find for that matter.

 

I can't find it anywhere in Arngeir's dialogue or MQ105's quest dialogue. How are you supposed to search for it?

[IsharaMeradin]

It is in a scene on MQ105. MQ105EinarthTeachScene to be specific.