Perhaps you should try some spelling variations:
"instituto pedagogico nacional" » "instituto oncologico nacional", "instituto pedagogica nacional", "instituto pedagogico tradicional", "instituto pedagogicos tradicional"
"instituto economico nacional" » "instituto tecnologico nacional", "instituto oncologico nacional", "instituto tecnico nacional", "instituto economia nacional", "instituto economico regional", "instituto astronomico nacional"
"instituto geologico nacional" » "instituto tecnologico nacional", "instituto neurologico nacional", "instituto oncologico nacional", "instituto geologico regional", "instituto geologica regional"
"instituto colegio nacional" » "instituto oncologico nacional", "instituto copesal nacional", "antiguo colegio nacional", "instituto coleccion nacional"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("instituto colegio nacional") or ((((("instituto geologico nacional") OR ("instituto economico nacional"))) or ("instituto pedagogico nacional"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("instituto colegio nacional") OR ((((("instituto geologico nacional") OR ("instituto economico nacional"))) OR ("instituto pedagogico nacional"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"instituto colegio nacional\") or (((((\"instituto geologico nacional\") OR (\"instituto economico nacional\"))) or (\"instituto pedagogico nacional\"))))*".
• Removing quotes may allow a broader search: (( instituto colegio nacional ) or ((((( instituto geologico nacional ) OR ( instituto economico nacional ))) or ( instituto pedagogico nacional ))))*.