Perhaps you should try some spelling variations:
lectures diel » lectures field, lectures de, lectures dans
lectures data » pictures data, lectures band, lectures de
lectures a » lectures _, lectures 1, lectures 2
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: ((lectures diel) OR (((lectures data) OR (lectures a)))) historia mexicana.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((lectures diel) or (((lectures data) OR (lectures a)))) historia mexicana".
• Adding a wildcard symbol may retrieve word variants: ((lectures diel) or (((lectures data) OR (lectures a)))) historia mexicana*.