Perhaps you should try some spelling variations:
historia mexican » historia mexico, history mexican, historia americana
lectures de » lectures _, lectures 1, lectures 2
lecteurs » secteurs, lecteur, lecture
mexicana » 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: ((lecteurs de) OR (lectures de)) ((historia mexican) OR (historia mexicana)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((lecteurs de) or (lectures de)) ((historia mexican) OR (historia mexicana))".
• Adding a wildcard symbol may retrieve word variants: ((lecteurs de) or (lectures de)) ((historia mexican) OR (historia mexicana))*.