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