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

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 ((("maternal nutritivo") OR ("material nutritivo"))))) OR ("maternal nutricion"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"maternal nutrition\") OR (((\"maternal nutritivo\") OR (\"material nutritivo\"))))) OR (\"maternal nutricion\"))".
• Removing quotes may allow a broader search: (((( maternal nutrition ) OR ((( maternal nutritivo ) OR ( material nutritivo ))))) OR ( maternal nutricion )).
• Adding a wildcard symbol may retrieve word variants: (((("maternal nutrition") OR ((("maternal nutritivo") OR ("material nutritivo"))))) OR ("maternal nutricion"))*.