What is the best way to find a very specific email you are searching for without having to go through Outlook visually scanning emails?

Click on Tools > Find

Choose Advanced Find¦ (ctrl+shift+F)

You can now use the pop up box to find specific words in the subject line or body of the email, from/sent-to lines, and other advanced searching features. You can also use the advanced searching features on meetings, files, contacts, tasks, or notes.