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