Perhaps you should try some spelling variations:
"american literature un american authors" » "american literatura un american authors", "american literatura una american authors", "american literature _ american authors", "american literature pan american authors", "american literature en america authors"
"american literature la american authors" » "american literatura la american authors", "american literature a american authors", "american literatura las american authors", "american literature la americana authors", "american literature la america authors", "american literature la americas authors"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("american literature un american authors") or ("american literature la american authors"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("american literature un american authors") OR ("american literature la american authors")).
• Removing quotes may allow a broader search: (( american literature un american authors ) or ( american literature la american authors )).
• Adding a wildcard symbol may retrieve word variants: (("american literature un american authors") or ("american literature la american authors"))*.