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