Perhaps you should try some spelling variations:
historia americana » historia mexicana, history americas, history america
history american » history americas, history america, history's american
lectures diel » lectures field, lectures de, lectures data
lettura del » lectura del, lettera del, lettura dei

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