If you are not finding enough information, your topic may be too narrow. Consider broadening it by:
If you are finding too much information, your topic may be too broad. Consider narrowing it by:
Smaller piece of the topic:
Narrower: How did religious change affect the themes of paintings in the 18th century?
Narrow: How are preschool children affected by the use of violent video games in their homes?
Broader: What are the affects of video games on young players?