Perhaps you should try some spelling variations:
political scientists » political science, social scientists
mark webber » mark weber, mark weiser, mark yeber
mr webber's » mr webster's, mr cibber's
mr webber » mr webbe, mr webster, mr webb

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: ((mark webber) OR (((mr webber) OR (mr webber's)))) (political scientists).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mark webber) or (((mr webber) OR (mr webber's)))) (political scientists)".
• Adding a wildcard symbol may retrieve word variants: ((mark webber) or (((mr webber) OR (mr webber's)))) (political scientists)*.