Perhaps you should try some spelling variations:
complementos alimentarios » complementacion alimentaria, componente alimentario
"suplementos alimenticios" » "suplementos dieteticos"
suplementos alimentacion » suplemento alimenticio, humanos alimentacion, suplementos dietarios
suplemento alimentario » suplemento alimenticio, suplemento dietario

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• Performing a fuzzy search may retrieve terms with similar spellings: (("suplementos alimenticios") or ("((((suplementos alimentacion) or (complementos alimentarios))) or (suplemento alimentario))"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("suplementos alimenticios") OR ("((((suplementos alimentacion) or (complementos alimentarios))) or (suplemento alimentario))")).
• Removing quotes may allow a broader search: (( suplementos alimenticios ) or ( ((((suplementos alimentacion) or (complementos alimentarios))) or (suplemento alimentario)) )).
• Adding a wildcard symbol may retrieve word variants: (("suplementos alimenticios") or ("((((suplementos alimentacion) or (complementos alimentarios))) or (suplemento alimentario))"))*.

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