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