Perhaps you should try some spelling variations:
lectures field » lectures held, lectures diel, measures field
lecture des » lecture de, lecture dans, lecture day
lectura de » lectura del, lecture 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: ((((((lectura de) OR (lecture des))) OR (((lectura de) OR (lecture des))l))) OR (lectures field)) historia mexicana.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((lectura de) OR (lecture des))) or (((lectura de) OR (lecture des))l))) or (lectures field)) historia mexicana".
• Adding a wildcard symbol may retrieve word variants: ((((((lectura de) OR (lecture des))) or (((lectura de) OR (lecture des))l))) or (lectures field)) historia mexicana*.