Perhaps you should try some spelling variations:
historia americana » history american, history americas, history america
"lectura del " » "lettura del ", "lecture de ", "lectura en ", "lecture del ", "lecture desl ", "lectures del "
"lectura de " » "lecture de ", "lecture des ", "lectures de "
mexicana » mexican

Try widening your search to All Fields.

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 ("lectura del "))((historia americana) OR (historia mexicana))"".
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"lectura de \") or (\"lectura del \"))((historia americana) OR (historia mexicana))\"\"".
• Removing quotes may allow a broader search: (( lectura de ) or ( lectura del ))((historia americana) OR (historia mexicana)).