Perhaps you should try some spelling variations:
"instituto tecnologico nacional" » "instituto oncologico nacional", "instituto tecnico nacional", "instituto tecnologico nacionales", "instituto geologico nacional"
"instituto neurologico nacional" » "instituto oncologico nacional", "instituto geologico nacional", "instituto tecnologico nacionales"
"instituto pedagogico nacional" » "instituto oncologico nacional", "instituto pedagogica nacional", "instituto pedagogico tradicional", "instituto pedagogico social"
"instituto ecologico nacional" » "instituto oncologico nacional", "instituto agroecologico nacional", "instituto clinico 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") OR ("instituto pedagogico 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") OR ("instituto pedagogico 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 pedagogico nacional\"))))*".
• Removing quotes may allow a broader search: (((( instituto ecologico nacional ) or ( instituto neurologico nacional ))) or ((( instituto tecnologico nacional ) OR ( instituto pedagogico nacional ))))*.