Perhaps you should try some spelling variations:
"instituto tecnologico nacional" » "instituto tecnico nacional", "instituto pedagogico nacional", "instituto tecnologico nacionales", "instituto tecnologico relacionado"
"instituto oncologia nacional" » "institucion oncologica nacional", "instituto oncol nacional", "instituto ontologia relacional", "instituto economia nacional", "instituto logia nacional"
"instituto geologico nacional" » "instituto neurologico nacional", "instituto agroecologico nacional", "instituto pedagogico nacional", "instituto geologico regional", "instituto economico nacional"
"instituto oncologico nacional" » "instituto ecologico nacional", "instituto deontologico nacional"

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

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