The active View contains a search tool to help you find material, map, and controller nodes.
At the bottom-left corner of the active View is a button, 
(Search For Nodes). Click this button to expand the search tool.
In the text field, enter the name of a node you want to find. The View Search tool locates names that begin with the characters you type. The search is not case-sensitive.
When the Search tool locates a name, the text in the text field becomes bold, and the 
(Zoom To Results) button becomes active: 
.
Click (Zoom To Results) to zoom to the node or nodes that the Search tool has found.
If you no longer need to use the Search tool, you can collapse it back to the (Search For Nodes) button by clicking the 
(Close) button at the right of the Search tool.