Perhaps you should try some spelling variations:
"political institutions" » "social institutions"
"financial institutions" » "finance institutions"
"fiscal institutions" » "social institutions", "legal institutions", "informal institutions"

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: (((("political institutions") OR ("fiscal institutions"))) OR ("financial institutions")).
• Removing quotes may allow a broader search: (((( political institutions ) or ( fiscal institutions ))) or ( financial institutions )).
• Adding a wildcard symbol may retrieve word variants: (((("political institutions") or ("fiscal institutions"))) or ("financial institutions"))*.