I'm not sure what you mean by "MIYA737.COO". This doesn't appear to be a standard file name or common term. It could potentially be:

1. A custom file name, possibly for a configuration file or data file.

2. An error message or code of some kind.

3. A partial or misspelled term.

Could you please provide more context about where you encountered this or what it might relate to? That would help me understand and potentially provide more useful information.