Perhaps you should try some spelling variations:
"maternal nutrition" » "materna nutrition", "materials nutrition", "materia nutrition", "maternal nutritivo"
"maternal nutritiva" » "materna nutritiva", "materials nutritiva", "materia nutritiva"
"materias nutricion" » "materia nutricion", "materiales nutricion"
"material nutritiva" » "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 ("materias nutricion"))) OR ((("maternal nutritiva") OR ("material nutritiva"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"maternal nutrition\") OR (\"materias nutricion\"))) OR (((\"maternal nutritiva\") OR (\"material nutritiva\"))))".
• Removing quotes may allow a broader search: (((( maternal nutrition ) OR ( materias nutricion ))) OR ((( maternal nutritiva ) OR ( material nutritiva )))).
• Adding a wildcard symbol may retrieve word variants: (((("maternal nutrition") OR ("materias nutricion"))) OR ((("maternal nutritiva") OR ("material nutritiva"))))*.