How to locate all nodes in level blueprint?

Actually i am a newbie to ue4 and still exploring the engine.

My question is as the level blueprint is very big the map and even when we fully zoom out (-12), we are not able to see all the nodes in the blueprint.

Is there any way to find/locate all the nodes of the blueprint? so that we have a better view of all the scripting that we have done.

Thanks in Advance.