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

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