It's possible that:
* The title is incorrect. Double-check the spelling and author's name.
* The work is obscure. It might be a lesser-known piece, a short story, or part of a larger collection.
* The work is unpublished. The author may have written it but not released it publicly.
To find more information, you could try:
* Searching online databases: Use keywords like "Francisco Icasiano," "The World in a Train," and "short story."
* Contacting libraries or literary archives: They may have resources or information about lesser-known works.
* Reaching out to Filipino literary communities: There may be groups or individuals who can help with identifying the story.
Without more information, it's difficult to provide a summary of this work.