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