Perhaps you should try some spelling variations:
"instituto tecnologico nacional" » "instituto tecnico nacional", "instituto tecnologico nacionales", "instituto oncologico nacional", "instituto geologico nacional"
"instituto pedagogico nacional" » "instituto pedagogica nacional", "instituto pedagogico tradicional", "instituto pedagogicos tradicional"
"instituto oncologico regional" » "instituto oncologico nacional", "instituto geologico regional", "instituto economico regional"
"instituto colegio nacional" » "instituto copesal nacional", "antiguo colegio nacional", "instituto clinico 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 tecnologico nacional") or ("instituto colegio nacional"))) or ((("instituto pedagogico nacional") or ("instituto oncologico regional"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("instituto tecnologico nacional") OR ("instituto colegio nacional"))) OR ((("instituto pedagogico nacional") OR ("instituto oncologico regional")))).
• Removing quotes may allow a broader search: (((( instituto tecnologico nacional ) or ( instituto colegio nacional ))) or ((( instituto pedagogico nacional ) or ( instituto oncologico regional )))).
• Adding a wildcard symbol may retrieve word variants: (((("instituto tecnologico nacional") or ("instituto colegio nacional"))) or ((("instituto pedagogico nacional") or ("instituto oncologico regional"))))*.