Perhaps you should try some spelling variations:
"racial prejudice against africana americans" » "racional prejudice against africana americans" (Expand Search), "racial prejudice against africana americano" (Expand Search), "racial prejudice against africana america" (Expand Search)
"racial prejudice against adriana americans" » "racional prejudice against adriana americans" (Expand Search), "racial prejudice against adriana americano" (Expand Search), "racial prejudice against adriana america" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("racial prejudice against africana americans") OR ("racial prejudice against adriana americans"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"racial prejudice against africana americans\") OR (\"racial prejudice against adriana americans\"))".
• Removing quotes may allow a broader search: (( racial prejudice against africana americans ) OR ( racial prejudice against adriana americans )).
• Adding a wildcard symbol may retrieve word variants: (("racial prejudice against africana americans") OR ("racial prejudice against adriana americans"))*.