Perhaps you should try some spelling variations:
"instituto agroecologico nacional" » "instituto agroecologico natural", "instituto geologico nacional", "instituto agroecologica hacia", "instituto agroeconomico nacional", "instituto agrogeologico nacional", "instituto agrocolegio nacional"
"instituto tecnologico nacional" » "instituto tecnico nacional", "instituto pedagogico nacional", "instituto tecnologico nacionales", "instituto geologico nacional"
"instituto ecologico nacional" » "instituto neurologico nacional", "instituto pedagogico nacional", "instituto clinico nacional", "instituto economico nacional", "instituto geologico nacional", "instituto colegio nacional"
"instituto oncologico nacional" » "instituto oncologia nacional", "instituto deontologico nacional"

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 agroecologico nacional"))) OR ((("instituto tecnologico nacional") OR ("instituto oncologico nacional"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"instituto ecologico nacional\") or (\"instituto agroecologico nacional\"))) or (((\"instituto tecnologico nacional\") OR (\"instituto oncologico nacional\"))))~".
• Removing quotes may allow a broader search: (((( instituto ecologico nacional ) or ( instituto agroecologico nacional ))) or ((( instituto tecnologico nacional ) OR ( instituto oncologico nacional ))))~.
• Adding a wildcard symbol may retrieve word variants: (((("instituto ecologico nacional") or ("instituto agroecologico nacional"))) or ((("instituto tecnologico nacional") OR ("instituto oncologico nacional"))))*.