Perhaps you should try some spelling variations:
"median age" » "mediana age", "media age", "mediante age"
"medianate age" » "medianaate age", "mediaate age", "medianteate age", "mediante age", "mediana age"
"medianaate age" » "medianaaate age", "mediaaate age", "medianteaate age", "mediante age"
"medianteaate age" » "medianateaate age", "mediateaate age", "medianteteaate 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 ((("medianate age") OR ((("medianaate age") OR ("medianteaate age"))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"median age\") OR (((\"medianate age\") OR (((\"medianaate age\") OR (\"medianteaate age\"))))))*".
• Removing quotes may allow a broader search: (( median age ) OR ((( medianate age ) OR ((( medianaate age ) OR ( medianteaate age ))))))*.