Perhaps you should try some spelling variations:
"instituto astronomico nacional" » "institucional gastronomico nacional", "instituto antonio nacional"
"instituto neurologico nacional" » "instituto tecnologico nacional", "instituto oncologico nacional", "instituto pedagogico nacional", "instituto tecnologico nacionales", "instituto economico nacional"
"instituto ecologico nacional" » "instituto tecnologico nacional", "instituto oncologico nacional", "instituto agroecologico nacional", "instituto economico nacional", "instituto colegio nacional"
"instituto geologico nacional" » "instituto tecnologico nacional", "instituto oncologico nacional", "instituto agroecologico nacional", "instituto geologico regional", "instituto pedagogico 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 astronomico nacional"))) OR ((("instituto geologico nacional") OR ("instituto neurologico nacional"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"instituto ecologico nacional\") or (\"instituto astronomico nacional\"))) or (((\"instituto geologico nacional\") OR (\"instituto neurologico nacional\"))))~".
• Removing quotes may allow a broader search: (((( instituto ecologico nacional ) or ( instituto astronomico nacional ))) or ((( instituto geologico nacional ) OR ( instituto neurologico nacional ))))~.
• Adding a wildcard symbol may retrieve word variants: (((("instituto ecologico nacional") or ("instituto astronomico nacional"))) or ((("instituto geologico nacional") OR ("instituto neurologico nacional"))))*.