Perhaps you should try some spelling variations:
"instituto pedagogico tradicional" » "instituto pedagogica nacional", "instituto pedagogico institucional", "instituto oncologico tradicional"
"instituto medico nacional" » "instituto tecnico nacional", "instituto credito nacional", "instituto codigo nacional"
"instituto unico nacional" » "instituto tecnico nacional", "instituto clinico nacional", "instituto andino nacional", "instituto unidad nacional", "instituto banco 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 pedagogico tradicional") OR ((("instituto unico nacional") OR ("instituto medico nacional"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"instituto pedagogico tradicional\") or (((\"instituto unico nacional\") OR (\"instituto medico nacional\"))))~".
• Removing quotes may allow a broader search: (( instituto pedagogico tradicional ) or ((( instituto unico nacional ) OR ( instituto medico nacional ))))~.
• Adding a wildcard symbol may retrieve word variants: (("instituto pedagogico tradicional") or ((("instituto unico nacional") OR ("instituto medico nacional"))))*.