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