Perhaps you should try some spelling variations:
"areas del psicoanalisis y epigenetica." » "areas y psicoanalisis y epigenetica.", "areas del psicoanalisis la epigenetica.", "areas de psicoanalisis y epigenetica.", "area del psicoanalisis y epigenetica.", "area de psicoanalisis y epigenetica."
"tarea el psicoanalisis y genetica." » "tarea el psicoanalisis la genetica.", "tarea el psicoanalisis de genetica.", "tarea el psicoanalisis y genomica.", "tarea del psicoanalisis y genetica.", "tarea en psicoanalisis y genetica.", "tarea es psicoanalisis y genetica."

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: (("tarea el psicoanalisis y genetica.") or ("areas del psicoanalisis y epigenetica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tarea el psicoanalisis y genetica.") OR ("areas del psicoanalisis y epigenetica.")).
• Removing quotes may allow a broader search: (( tarea el psicoanalisis y genetica. ) or ( areas del psicoanalisis y epigenetica. )).
• Adding a wildcard symbol may retrieve word variants: (("tarea el psicoanalisis y genetica.") or ("areas del psicoanalisis y epigenetica."))*.