Perhaps you should try some spelling variations:
historia mexican » historia mexicana, historia mexico, history mexican
lectures diel » lectures field, lectures data, lectures dans
lecturas del » lectura de, lecturas en, lecturas desde
lectura del » lectura de, lettura del, lecture de
lectures de » lectures _, lectures 1, lectures 2

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 (lectura del))) OR (((lectures diel) OR (lectures de)))) historia mexican.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((lecturas del) or (lectura del))) or (((lectures diel) OR (lectures de)))) historia mexican".
• Adding a wildcard symbol may retrieve word variants: ((((lecturas del) or (lectura del))) or (((lectures diel) OR (lectures de)))) historia mexican*.