Image: Note pencil, by icon 54, The Noun Project CC BY 4.0
For in-depth research you may need to use special methods to find as much as you can on your topic:
Keep a record of your searches to keep track of what you have done.
A spreadsheet is a useful method for recording the details of your search.
Attend our Microsoft Excel training sessions to learn essential spreadsheet concepts and skills.
Google Sheets is another option.
You have probably found the main literature on your topic if: