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