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