Before you start searching it is useful to create a Word document in which you note down everything concerning your literature search and in which you record which decisions you have made.This is later useful, knowing which choices you have made and why. Moreover, it is a justification for your search strategy.
What do you mention in your document?
Through Advanced you can find your search history, an overview of all your searches. Copy this with Printscreen or with the Snipping Tool (Windows tool) and paste this in your logbook.