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