A family of Microsoft word processing software products for creating web, email, and print documents.
By default, the filename Word will assign to a document is the first few words of the text--up to the first punctuation mark. If you can remember those words, it might help you search, but Windows Search can also search for any unique text anywhere in the document. Keep in mind that the document would be saved in the folder designated as the default Documents folder for Word (or whatever folder you most recently saved to in a given Word session). If you are using OneDrive, you should search there.