Perhaps you should try some spelling variations:
"political sciences --" » "political science --", "political scientists --", "policy sciences --"
"politics science --" » "political science --", "policy science --", "politcal science --"
"politicl science --" » "political science --", "politcal science --", "policy science --"
"politics since --" » "policy since --"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("politics science --") or ("political sciences --"))) or ((("politicl science --") OR ("politics since --"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("politics science --") OR ("political sciences --"))) OR ((("politicl science --") OR ("politics since --")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"politics science --\") or (\"political sciences --\"))) or (((\"politicl science --\") OR (\"politics since --\"))))".
• Removing quotes may allow a broader search: (((( politics science -- ) or ( political sciences -- ))) or ((( politicl science -- ) OR ( politics since -- )))).
• Adding a wildcard symbol may retrieve word variants: (((("politics science --") or ("political sciences --"))) or ((("politicl science --") OR ("politics since --"))))*.

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