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"
"material nutritivo" » "material 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 ((("material 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 (((\"material nutritivo\") OR (\"materia nutritivo\"))))) OR (\"material nutrition\"))*".
• Removing quotes may allow a broader search: (((((( maternal nutrition ) OR ( materna nutrition ))) OR ((( material nutritivo ) OR ( materia nutritivo ))))) OR ( material nutrition ))*.