When you use //title this searches for all <title> elements starting at the root of the document. Use either simply title to find child titles, or .//title if you want to find titles even if they are nested inside of other elements.
When you use //title this searches for all <title> elements starting at the root of the document. Use either simply title to find child titles, or .//title if you want to find titles even if they are nested inside of other elements.