Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("Serie secundaria en dos") OR ("Serie secundaria ela dos"))) OR ("Serie secundaria un dos"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Serie secundaria en dos\") OR (\"Serie secundaria ela dos\"))) OR (\"Serie secundaria un dos\"))".
• Removing quotes may allow a broader search: (((( Serie secundaria en dos ) OR ( Serie secundaria ela dos ))) OR ( Serie secundaria un dos )).
• Adding a wildcard symbol may retrieve word variants: (((("Serie secundaria en dos") OR ("Serie secundaria ela dos"))) OR ("Serie secundaria un dos"))*.