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"
"medianatetea age" » "medianaatetea age", "mediaatetea age", "mediasatetea age", "medianamente age"
"medianatea age" » "medianaatea age", "mediaatea age", "mediasatea 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 ((("medianatetea age") OR ((("medianatea age") OR ("mediante age"))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"median age\") OR (((\"medianatetea age\") OR (((\"medianatea age\") OR (\"mediante age\"))))))*".
• Removing quotes may allow a broader search: (( median age ) OR ((( medianatetea age ) OR ((( medianatea age ) OR ( mediante age ))))))*.