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

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("varela del psicoanalisis y epigenetica.") or ("varea el psicoanalisis en epigenetica."))~.
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• Adding a wildcard symbol may retrieve word variants: (("varela del psicoanalisis y epigenetica.") or ("varea el psicoanalisis en epigenetica."))*.