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"
"medianatea age" » "medianaatea age", "mediaatea age", "mediasatea age"
"medianaaatea age" » "medianaaaatea age", "mediaaaatea age", "mediasaaatea age"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"median age\") OR (((\"medianatea age\") OR (((\"medianaaatea age\") OR (\"mediante age\"))))))~".
• Removing quotes may allow a broader search: (( median age ) OR ((( medianatea age ) OR ((( medianaaatea age ) OR ( mediante age ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("median age") OR ((("medianatea age") OR ((("medianaaatea age") OR ("mediante age"))))))*.