Perhaps you should try some spelling variations:
"mediante age" » "mediante el", "mediante la", "mediante un", "medianate age", "mediate age", "mediaste age"
"median age" » "mediana age", "media age", "medias age"
"medianate age" » "medianaate age", "mediaate age", "mediasate age"
"medianteate age" » "medianateate age", "mediateate age", "mediasteate age", "medianamente age"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("median age") OR ((((("medianate age") OR ("mediante age"))) OR ("medianteate age"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"median age\") OR (((((\"medianate age\") OR (\"mediante age\"))) OR (\"medianteate age\"))))*".
• Removing quotes may allow a broader search: (( median age ) OR ((((( medianate age ) OR ( mediante age ))) OR ( medianteate age ))))*.