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"
"medianaaate age" » "medianaaaate age", "mediaaaate age", "mediasaaate 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 ((((("medianaate age") OR ("mediante age"))) OR ("medianaaate age"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"median age\") OR (((((\"medianaate age\") OR (\"mediante age\"))) OR (\"medianaaate age\"))))*".
• Removing quotes may allow a broader search: (( median age ) OR ((((( medianaate age ) OR ( mediante age ))) OR ( medianaaate age ))))*.