Perhaps you should try some spelling variations:
"sunk series in africa regional dummies." » "sunk series in africa region dummies.", "suny series in africa regional dummies.", "bank series in africa regional dummies."
"sunk series in africa urban studies." » "sunk series in africa durban studies.", "sunk series in african urban studies.", "sunk series in africas urban studies.", "suny series in africa urban studies.", "bank series in africa urban studies."

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: (("sunk series in africa urban studies.") OR ("sunk series in africa regional dummies."))~.
• Removing quotes may allow a broader search: (( sunk series in africa urban studies. ) or ( sunk series in africa regional dummies. ))~.
• Adding a wildcard symbol may retrieve word variants: (("sunk series in africa urban studies.") or ("sunk series in africa regional dummies."))*.