Hi JackieCDPH ,
Thank you for bringing this matter to us. Regarding your concern, you can improve its accuracy or to understand you better by going to Control Panel > Speech Recognition > Configure your Speech Recognition experience.
You may also visit this link for more information on using Speech Recognition on Windows 10 - https://support.microsoft.com/en-us/help/17208/windows-10-use-speech-recognition
I hope this helps and should need further assistance, please feel free to reply back.