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"
"medianaate age" » "medianaaate age", "mediaaate age", "mediasaate age"
"medianteaate age" » "medianateaate age", "mediateaate age", "mediasteaate 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 ((((("medianaate age") OR ("medianteaate age"))) OR ("mediante age"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"median age\") OR (((((\"medianaate age\") OR (\"medianteaate age\"))) OR (\"mediante age\"))))*".
• Removing quotes may allow a broader search: (( median age ) OR ((((( medianaate age ) OR ( medianteaate age ))) OR ( mediante age ))))*.