When you say your search terms, the Voice Control app automatically searches your device first. Once your device has been searched, you can search the Internet by tapping Search the Internet.
To help improve your search results, be as specific as possible with your search terms. For example, "Search contacts for Megan Ball," "Search for messages from Matthew," or "Search for notes containing the word cars."
To search the Internet without searching your device first, just specify that you want to search the Internet. For example, "Search the Internet for cars."