Perhaps you should try some spelling variations:
instancias » instancia (Expand Search)
academiaas." » academicas." (Expand Search), academias." (Expand Search), academicals." (Expand Search)
academic." » academia." (Expand Search), academicos." (Expand Search)
academica." » academiaa." (Expand Search), academicosa." (Expand Search), academicos." (Expand Search)
academico." » academiao." (Expand Search), academicoso." (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 instancias) (((academiaas.\" OR academic.\") OR academica.\") OR academico.\")~".
• Removing quotes may allow a broader search: (sustancias OR instancias) (((academiaas. OR academic. ) OR academica. ) OR academico. )~.
• Adding a wildcard symbol may retrieve word variants: "(sustancias OR instancias) (((academiaas." OR academic.") OR academica.") OR academico.")*.