Perhaps you should try some spelling variations:
"caracteristicas psicosociales descuidados." » "caracteristicas composicionales descuidados.", "caracteristicas psicometricas descuidados.", "caracteristicas psicosociales asociados.", "caracteristicas psicosociales debidos.", "caracteristicas psicosociales mediadas."
"caracteristicas nacionales mexico." » "caracteristicas nacional mexico.", "caracteristicas sociales mexico."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("caracteristicas nacionales mexico.") or ("caracteristicas psicosociales descuidados."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("caracteristicas nacionales mexico.") OR ("caracteristicas psicosociales descuidados.")).
• Removing quotes may allow a broader search: (( caracteristicas nacionales mexico. ) or ( caracteristicas psicosociales descuidados. )).
• Adding a wildcard symbol may retrieve word variants: (("caracteristicas nacionales mexico.") or ("caracteristicas psicosociales descuidados."))*.