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