Perhaps you should try some spelling variations:
"experiencias pedagogicas" » "experiencia pedagogica"
"expediciones pedagogicas" » "expedicion pedagogica", "orientaciones pedagogicas", "implicaciones pedagogicas"
"innovacion pedagogica" » "innovacion tecnologica", "investigacion pedagogica"
"mediacion pedagogica" » "investigacion pedagogica"

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: (((("mediacion pedagogica") OR ("innovacion pedagogica"))) or ((("expediciones pedagogicas") or ("experiencias pedagogicas"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mediacion pedagogica") OR ("innovacion pedagogica"))) OR ((("expediciones pedagogicas") OR ("experiencias pedagogicas")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mediacion pedagogica\") OR (\"innovacion pedagogica\"))) or (((\"expediciones pedagogicas\") or (\"experiencias pedagogicas\"))))".
• Removing quotes may allow a broader search: (((( mediacion pedagogica ) OR ( innovacion pedagogica ))) or ((( expediciones pedagogicas ) or ( experiencias pedagogicas )))).
• Adding a wildcard symbol may retrieve word variants: (((("mediacion pedagogica") OR ("innovacion pedagogica"))) or ((("expediciones pedagogicas") or ("experiencias pedagogicas"))))*.

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