Perhaps you should try some spelling variations:
"median age" » "mediana age", "media age", "mediante age"
"mediantea age" » "medianatea age", "mediatea age", "mediantetea age", "mediante age", "mediana age"
"medianatea age" » "medianaatea age", "mediaatea age", "medianteatea age", "mediante age", "mediantea age", "medianaa age"
"medianate age" » "medianaate age", "mediaate age", "medianteate age", "mediante age", "mediana 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 ((("mediantea age") OR ((("medianatea age") OR ("medianate age"))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"median age\") OR (((\"mediantea age\") OR (((\"medianatea age\") OR (\"medianate age\"))))))*".
• Removing quotes may allow a broader search: (( median age ) OR ((( mediantea age ) OR ((( medianatea age ) OR ( medianate age ))))))*.