Perhaps you should try some spelling variations:
"instituto tecnologico nacional" » "instituto oncologico nacional", "instituto tecnico nacional", "instituto pedagogico nacional", "instituto tecnologico nacionales"
"instituto neurologico nacional" » "instituto oncologico nacional", "instituto pedagogico nacional", "instituto tecnologico nacionales", "instituto astronomico nacional"
"instituto ecologico nacional" » "instituto oncologico nacional", "instituto agroecologico nacional", "instituto pedagogico nacional", "instituto economico nacional", "instituto colegio nacional"
"instituto geologico nacional" » "instituto oncologico nacional", "instituto agroecologico nacional", "instituto pedagogico nacional", "instituto geologico regional"

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

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