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