Perhaps you should try some spelling variations:
"a world a country study" » "a world a country studies", "_ world a country study"
"a world war country study" » "a world war country studies", "a world care country study", "a world pdr country study", "a world per country study", "_ world war country study"
"a world _ country study" » "a world _ country studies", "_ world _ country study"

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: (((("a world a country study") OR ("a world war country study"))) or ("a world _ country study"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("a world a country study") OR ("a world war country study"))) OR ("a world _ country study")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"a world a country study\") OR (\"a world war country study\"))) or (\"a world _ country study\"))".
• Removing quotes may allow a broader search: (((( a world a country study ) OR ( a world war country study ))) or ( a world _ country study )).
• Adding a wildcard symbol may retrieve word variants: (((("a world a country study") OR ("a world war country study"))) or ("a world _ country study"))*.