Perhaps you should try some spelling variations:
"varela del psicoanalisis y epigenetica." » "varela el psicoanalisis y epigenetica.", "varela del psicoanalisis y genetica.", "varela de psicoanalisis y epigenetica.", "marcela del psicoanalisis y epigenetica."
"marcela y psicoanalisis la epigenetica." » "marcela y psicoanalisis a epigenetica.", "marcela y psicoanalisis una epigenetica.", "marcela y psicoanalisis en epigenetica.", "marcela el psicoanalisis la epigenetica.", "marcela y psicoanalisis la genetica.", "marcela a psicoanalisis la epigenetica.", "marcela v psicoanalisis la epigenetica.", "marcela w psicoanalisis la epigenetica."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("varela del psicoanalisis y epigenetica.") or ("marcela y psicoanalisis la epigenetica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("varela del psicoanalisis y epigenetica.") OR ("marcela y psicoanalisis la epigenetica.")).
• Removing quotes may allow a broader search: (( varela del psicoanalisis y epigenetica. ) or ( marcela y psicoanalisis la epigenetica. )).
• Adding a wildcard symbol may retrieve word variants: (("varela del psicoanalisis y epigenetica.") or ("marcela y psicoanalisis la epigenetica."))*.