If you use Microsoft Outlook, the Search / Query box at the top is a VERY powerful feature that allows you to search your email and tasks very quickly – IF YOU KNOW THE CORRECT SYNTAX. This link is all about "what is the right syntax for the Microsoft Search within Outlook" 🙂
The following table shows examples of searches you might find useful. The search query syntax, available when the Instant Search (Instant Search: A Search feature that provides search results quickly with word highlighting as you type. The Instant Search pane is always available in Mail, Calendar, Contacts, Tasks, Notes, Folder List, and Journal.) feature is enabled, follows this basic form: keyword:your search criteria value.
Other links that with Outlook search shortcuts: