Perhaps you should try some spelling variations:
american association » american colonization, italian association
african association » european association
american education » american taxation

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: ((african association) OR (((((american association) OR (american education))) OR (american fiction)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((african association) or (((((american association) OR (american education))) or (american fiction))))".
• Adding a wildcard symbol may retrieve word variants: ((african association) or (((((american association) OR (american education))) or (american fiction))))*.