You’ve never progressed beyond putting quotations around your search terms, when googling, right? Here’s your opportunity to get detailed instruction on improving your search results. This is a long article but you’ll want to save it for future reference.
Google can also help with your research, for a small fee. The answers home page is the place to go. Read this attorney’s experience with using the Google service. You might see a way to apply this tool in your investigative work.