Perhaps you should try some spelling variations:
distancias » distancia (Expand Search)
instancias » instancia (Expand Search)
academicas." » academicos." (Expand Search), academico." (Expand Search), academia." (Expand Search), academicoss." (Expand Search)
academicoss." » academicos." (Expand Search), academico." (Expand Search), academics." (Expand Search)
academica." » academico." (Expand Search), academicos." (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((sustancias OR distancias) OR instancias) ((academicas.\" OR academicoss.\") OR academica.\")~".
• Removing quotes may allow a broader search: ((sustancias OR distancias) OR instancias) ((academicas. OR academicoss. ) OR academica. )~.
• Adding a wildcard symbol may retrieve word variants: "((sustancias OR distancias) OR instancias) ((academicas." OR academicoss.") OR academica.")*.