Perhaps you should try some spelling variations:
lectures field » lectures held, measures field, lectures food
lectures diel » lectures de, lectures data, lectures dans
lecturas del » lectura del, lectura de, lectures de
mexicana » mexican, americana

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((lecturas del) OR (((lectures diel) OR (lectures field)))) historia mexicana.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((lecturas del) or (((lectures diel) OR (lectures field)))) historia mexicana".
• Adding a wildcard symbol may retrieve word variants: ((lecturas del) or (((lectures diel) OR (lectures field)))) historia mexicana*.