Perhaps you should try some spelling variations:
"maternal nutrition" » "materials nutrition", "internal nutrition", "external nutrition", "maternal nutritiva"
"maternal nutricion" » "materials nutricion", "internal nutricion", "external nutricion"
"material nutrition" » "material nutritiva"
"materna nutrition" » "materna nutritiva"
"materia nutritivo" » "materia nutritiva"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("maternal nutrition") OR ("material nutrition"))) OR ("maternal nutricion"))) OR ((("materna nutrition") OR ("materia nutritivo"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"maternal nutrition\") OR (\"material nutrition\"))) OR (\"maternal nutricion\"))) OR (((\"materna nutrition\") OR (\"materia nutritivo\"))))*".
• Removing quotes may allow a broader search: (((((( maternal nutrition ) OR ( material nutrition ))) OR ( maternal nutricion ))) OR ((( materna nutrition ) OR ( materia nutritivo ))))*.