Perhaps you should try some spelling variations:
"american studies species" » "american studies special", "american studies studies", "american species species"
"american studies series" » "american studies services", "american studies theories", "american studies studies"

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: (("american studies series") OR ("american studies species")).
• Removing quotes may allow a broader search: (( american studies series ) or ( american studies species )).
• Adding a wildcard symbol may retrieve word variants: (("american studies series") or ("american studies species"))*.