Perhaps you should try some spelling variations:
"serie integral al competencias." » "serie integral a competencias.", "serie integral las competencias.", "serie integral en competencias.", "serie integral del competencias.", "serie integrado al competencias."
serie integrado » norte integrado
"Serie integrado de competencias." » "Serie integrado por competencias.", "Serie integrado las competencias.", "Serie integral de competencias.", "Serie integracion de competencias.", "Serie integral del competencias."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("serie integral al competencias.") or ("Serie integrado de competencias."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie integral al competencias.") OR ("Serie integrado de competencias.")).
• Removing quotes may allow a broader search: (( serie integral al competencias. ) or ( Serie integrado de competencias. )).
• Adding a wildcard symbol may retrieve word variants: (("serie integral al competencias.") or ("Serie integrado de competencias."))*.