Perhaps you should try some spelling variations:
22political science » political science, inpolitical science, political sciences
2f bibliography » 22 bibliography, 23 bibliography, 20 bibliography
12 bibliography » 2 bibliography, 8 bibliography, 5 bibliography
2f catalogs » icf catalogs, 2.4 catalogs, mef catalogs

Try widening your search to All Fields.

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: %22political science %((2f bibliography) OR (12 bibliography)) %2f catalogs%22.
• Adding a wildcard symbol may retrieve word variants: %22political science %((2f bibliography) or (12 bibliography)) %2f catalogs%22*.