Perhaps you should try some spelling variations:
"tareas de psicoanalisis y epigenetica." » "tareas del psicoanalisis y epigenetica.", "tareas el psicoanalisis y epigenetica.", "tareas de psicoanalisis la epigenetica.", "areas de psicoanalisis y epigenetica.", "tarea de psicoanalisis y epigenetica."
"areal y psicoanalisis y genetica." » "areal el psicoanalisis y genetica.", "areal y psicoanalisis la genetica.", "areal y psicoanalisis de genetica.", "areal y psicoanalisis y genomica.", "arenal y psicoanalisis y genetica.", "real y 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: (("tareas de psicoanalisis y epigenetica.") or ("areal y psicoanalisis y genetica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tareas de psicoanalisis y epigenetica.") OR ("areal y psicoanalisis y genetica.")).
• Removing quotes may allow a broader search: (( tareas de psicoanalisis y epigenetica. ) or ( areal y psicoanalisis y genetica. )).
• Adding a wildcard symbol may retrieve word variants: (("tareas de psicoanalisis y epigenetica.") or ("areal y psicoanalisis y genetica."))*.