Perhaps you should try some spelling variations:
"instituto tecnologico nacional" » "instituto oncologico nacional", "instituto tecnico nacional", "instituto tecnologico nacionales"
"instituto neurologico nacional" » "instituto oncologico nacional", "instituto tecnologico nacionales", "instituto astronomico nacional"
"instituto pedagogico nacional" » "instituto oncologico nacional", "instituto pedagogica nacional", "instituto pedagogico tradicional", "instituto pedagogicos tradicional"
"instituto geologico nacional" » "instituto oncologico nacional", "instituto agroecologico nacional", "instituto geografico nacional", "instituto geologico regional", "instituto economico nacional"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("instituto neurologico nacional") or ((((("instituto geologico nacional") OR ("instituto pedagogico nacional"))) or ("instituto tecnologico nacional"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("instituto neurologico nacional") OR ((((("instituto geologico nacional") OR ("instituto pedagogico nacional"))) OR ("instituto tecnologico nacional")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"instituto neurologico nacional\") or (((((\"instituto geologico nacional\") OR (\"instituto pedagogico nacional\"))) or (\"instituto tecnologico nacional\"))))".
• Removing quotes may allow a broader search: (( instituto neurologico nacional ) or ((((( instituto geologico nacional ) OR ( instituto pedagogico nacional ))) or ( instituto tecnologico nacional )))).
• Adding a wildcard symbol may retrieve word variants: (("instituto neurologico nacional") or ((((("instituto geologico nacional") OR ("instituto pedagogico nacional"))) or ("instituto tecnologico nacional"))))*.