Perhaps you should try some spelling variations:
"serie integral de competencias." » "serie integral por competencias.", "serie integral las competencias."
serie integrado » norte integrado
"Serie integrado al competencias." » "Serie integrado a competencias.", "Serie integrado las competencias.", "Serie integrado en competencias.", "Serie integrado del competencias.", "Serie integrado de 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 de competencias.") or ("Serie integrado al competencias."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie integral de competencias.") OR ("Serie integrado al competencias."))*.
• Removing quotes may allow a broader search: (( serie integral de competencias. ) or ( Serie integrado al competencias. ))*.