Perhaps you should try some spelling variations:
"congresos del recurso." » "congreso del recurso.", "congresos de recurso.", "congreso de recurso.", "congresos el recurso.", "congresos de recursos.", "congresos del curso."
"congresos el curso." » "congresos e curso.", "congreso del curso.", "congreso en curso.", "congresos del curso.", "congresos el recurso.", "congresos el cuerpo."
"congresos y curso." » "congresos e curso.", "congresos y cursos.", "congresos 2 curso.", "congresos 1 curso."

Try widening your search to All Fields.

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

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