Perhaps you should try some spelling variations:
historia mexican » historia mexicana, historia mexico, history mexican
lectures diel » lectures field, lectures de, lectures dans
lectures data » pictures data, lectures a, lectures band

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)) historia mexican.
• Adding a wildcard symbol may retrieve word variants: ((lectures diel) or (lectures data)) historia mexican*.