Perhaps you should try some spelling variations:
"coleccion guias particulares OR los particulares ." » "coleccion casos particulares OR los particulares .", "coleccion gomez particulares OR los particulares .", "coleccion juntas articulares OR los particulares .", "coleccion guias particulares OR los participantes .", "coleccion guias particulares OR los articulos .", "coleccion guias particulares OR los titulares ."
"coleccion guias curriculares." » "coleccion grupos curriculares.", "coleccion aula curriculares.", "coleccion becas curriculares."

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: (("coleccion guias curriculares.") or ("coleccion ((guias particulares) OR (los particulares))."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("coleccion guias curriculares.") OR ("coleccion ((guias particulares) OR (los particulares)).")).
• Removing quotes may allow a broader search: (( coleccion guias curriculares. ) or ( coleccion ((guias particulares) OR (los particulares)). )).
• Adding a wildcard symbol may retrieve word variants: (("coleccion guias curriculares.") or ("coleccion ((guias particulares) OR (los particulares))."))*.