Perhaps you should try some spelling variations:
"a world raven country studies" » "a world seven country studies", "a world haven county studies", "a world eleven country studies", "a world travel country studies", "a world brave country studies", "a world review country studies"
"a world ran industry studies" » "a world rain industry studies", "a world can industry studies", "a world lan industry studies", "a world raw industry studies", "a world range industry studies", "a world real industry studies"
"a world ran country studies" » "a world rank country studies", "a world run country studies", "a world brand country studies", "a world raw country studies", "a world range country studies", "a world real country studies"

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: (((("a world ran country studies") OR ("a world raven country studies"))) OR ("a world ran industry studies")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"a world ran country studies\") OR (\"a world raven country studies\"))) or (\"a world ran industry studies\"))".
• Removing quotes may allow a broader search: (((( a world ran country studies ) OR ( a world raven country studies ))) or ( a world ran industry studies )).
• Adding a wildcard symbol may retrieve word variants: (((("a world ran country studies") OR ("a world raven country studies"))) or ("a world ran industry studies"))*.