Perhaps you should try some spelling variations:
"innovaciones pedagogicas" » "innovacion pedagogica", "innovaciones tecnologicas", "orientaciones pedagogicas"
"mediaciones pedagogicas" » "implicaciones pedagogicas", "expediciones pedagogicas", "orientaciones pedagogicas"
"educaciones pedagogias" » "implicaciones pedagogicas", "expediciones pedagogicas"
"mediacion pedagogica" » "innovacion 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: (((("educaciones pedagogias") or ((("innovaciones pedagogicas") or ("mediaciones pedagogicas"))))) or ("mediacion pedagogica"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("educaciones pedagogias") OR ((("innovaciones pedagogicas") OR ("mediaciones pedagogicas"))))) OR ("mediacion pedagogica")).
• Removing quotes may allow a broader search: (((( educaciones pedagogias ) or ((( innovaciones pedagogicas ) or ( mediaciones pedagogicas ))))) or ( mediacion pedagogica )).
• Adding a wildcard symbol may retrieve word variants: (((("educaciones pedagogias") or ((("innovaciones pedagogicas") or ("mediaciones pedagogicas"))))) or ("mediacion pedagogica"))*.