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