If you have a complex graph and cannot find components quickly and easily, press Ctrl+O to open the Find component dialog. The searched text is highlighted both in component names and description:
As you type, the components are searched by their:
name - for example, if you rename FlatFileReader to read customers from text file, you can search the component by typing customers, text file, etc.
description - both the default description and the custom one you have added to a component can be searched.
Click the component in the search results.
The component will flash several times and at the same time it will be selected and focused in your graph layout.