Perhaps you should try some spelling variations:
"political institutions" » "social institutions"
"fiscal institutions" » "financial institutions", "social institutions", "legal institutions"
"local 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: (((("local institutions") OR ("political institutions"))) OR ("fiscal institutions")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"local institutions\") OR (\"political institutions\"))) or (\"fiscal institutions\"))".
• Removing quotes may allow a broader search: (((( local institutions ) OR ( political institutions ))) or ( fiscal institutions )).
• Adding a wildcard symbol may retrieve word variants: (((("local institutions") OR ("political institutions"))) or ("fiscal institutions"))*.