It's likely a misspelling or a combination of words that don't form a meaningful phrase.
To help you better, could you please provide more context? What were you trying to say or what was the situation where you heard this?
For example:
* Were you trying to say something like "This is mine"? If so, the correct phrase would be "Nōku tēnei".
* Were you trying to say something like "It's for me"? If so, the correct phrase would be "Mōku tēnei".
With more information, I can help you find the correct Māori phrase.