Perhaps you should try some spelling variations:
"instituto tecnologico nacional" » "instituto oncologico nacional", "instituto tecnico nacional", "instituto pedagogico nacional", "instituto tecnologico nacionales"
"instituto geologico nacional" » "instituto neurologico nacional", "instituto oncologico nacional", "instituto agroecologico nacional", "instituto geologico regional", "instituto pedagogico nacional"
"instituto hospital nacional" » "instituto copesal nacional", "instituto pitao nacional", "instituto hospital regional", "instituto hospital internacional", "instituto hospital nicolas"
"instituto distrital nacional" » "instituto distrital ocupacional", "instituto industrial nacional", "instituto distrital hacia"

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

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