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