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