Perhaps you should try some spelling variations:
"instituto pedagogico nacional" » "instituto tecnologico nacional", "instituto oncologico nacional", "instituto pedagogica nacional", "instituto pedagogico tradicional", "instituto pedagogico social"
"instituto ecologico nacional" » "instituto tecnologico nacional", "instituto oncologico nacional", "instituto neurologico nacional", "instituto economico nacional", "instituto colegio nacional"
"instituto geologico nacional" » "instituto tecnologico nacional", "instituto neurologico nacional", "instituto oncologico nacional", "instituto economico nacional", "instituto geologica regional"
"instituto geologico regional" » "instituto tecnologico regional", "instituto neurologico regional", "instituto oncologico regional", "instituto geologia regional", "instituto economico regional"

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