Power-Chat first needs to locate the relevant documents or wiki articles before it can answer your question. It does this by matching the content of your query against the content of your documents and wiki articles.
Referencing a document by its name or description alone isn't enough — Power-Chat's matching logic works on document content, not on names or descriptions. You need to phrase your query using words or phrases that actually appear in the document or article you're looking for.
Read more here on how Power-Chat works.