1. Write down your research questions - what is it you want to know? :
Are self driving cars safe?
What are the benefits?
What are the dangers?
2. Come up with synonyms for some of the terms:
Self-driving cars; automated cars; driverless cars
Benefits; supporters; controversies; issues
Dangers; safety; problems; accidents; concerns
3. Try different combinations of your search terms when searching the general Library databases:
"Self-driving cars" AND benefits
"Automated cars" AND safe*
"Self-driving cars" AND accidents
"Automated cars" AND concerns