Perhaps you should try some spelling variations:
"marcelo de psicoanalisis y genetica." » "marcelo del psicoanalisis y genetica.", "marcelo y psicoanalisis y genetica.", "marcela de psicoanalisis y genetica.", "marcelo de psicoanalisis la genetica.", "marcelo de psicoanalisis de genetica.", "marcelo de psicoanalisis y genomica."
"varela el psicoanalisis ly epigenetico." » "varela el psicoanalisis la epigenetico.", "varela el psicoanalisis en epigenetico.", "varela el psicoanalisis de epigenetico.", "varela el psicoanalisis y epigenetico.", "varela el psicoanalisis la epigenetica.", "varela el psicoanalisis y epigenetica.", "varela del psicoanalisis ly epigenetico.", "varela en psicoanalisis ly epigenetico.", "varelo el psicoanalisis ly epigenetico."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("varela el psicoanalisis ly epigenetico.") or ("marcelo de psicoanalisis y genetica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("varela el psicoanalisis ly epigenetico.") OR ("marcelo de psicoanalisis y genetica.")).
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• Adding a wildcard symbol may retrieve word variants: (("varela el psicoanalisis ly epigenetico.") or ("marcelo de psicoanalisis y genetica."))*.