Perhaps you should try some spelling variations:
african » american (Expand Search)
"Recent African origin of modern humans* OR " » "Recent African original of modern humans* OR " (Expand Search), "Recent African origin of moderne humans* OR " (Expand Search), "Recent African origin of modernes humans* OR " (Expand Search)
origine » originale (Expand Search), original (Expand Search)
modern » moderne (Expand Search), modernes (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: (("Recent African origin of modern humans*) OR ("Recent African origine of modern humans*))~.
• Removing quotes may allow a broader search: (( Recent African origin of modern humans*) OR ( Recent African origine of modern humans*)).
• Adding a wildcard symbol may retrieve word variants: (("Recent African origin of modern humans*) OR ("Recent African origine of modern humans*))*.