Perhaps you should try some spelling variations:
"instituto tecnologico nacional" » "instituto oncologico nacional", "instituto pedagogico nacional", "instituto tecnologico nacionales", "instituto tecnologico relacionado"
"instituto ecologico nacional" » "instituto oncologico nacional", "instituto neurologico nacional", "instituto agroecologico nacional", "instituto economico nacional", "instituto economica nacional"
"instituto geologico nacional" » "instituto neurologico nacional", "instituto oncologico nacional", "instituto agroecologico nacional", "instituto geologico regional", "instituto pedagogico nacional"
"instituto colegio nacional" » "instituto oncologico nacional", "instituto copesal nacional", "antiguo colegio nacional", "instituto coleccion nacional"
"instituto tecnico nacional" » "instituto unico nacional", "instituto tecnico internacional", "instituto banco 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 ecologico nacional") or ((("instituto tecnologico nacional") OR ("instituto tecnico nacional"))))) or ("instituto colegio nacional"))) or ("instituto geologico nacional"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("instituto ecologico nacional") OR ((("instituto tecnologico nacional") OR ("instituto tecnico nacional"))))) OR ("instituto colegio nacional"))) OR ("instituto geologico nacional"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"instituto ecologico nacional\") or (((\"instituto tecnologico nacional\") OR (\"instituto tecnico nacional\"))))) or (\"instituto colegio nacional\"))) or (\"instituto geologico nacional\"))*".
• Removing quotes may allow a broader search: (((((( instituto ecologico nacional ) or ((( instituto tecnologico nacional ) OR ( instituto tecnico nacional ))))) or ( instituto colegio nacional ))) or ( instituto geologico nacional ))*.