Perhaps you should try some spelling variations:
"harold bridger transitional period." » "harold der transitional period.", "harold gissel transitional period.", "harold order transitions period.", "harold bridger transition period.", "harold bridger transition periods.", "harold bradley transitional period."
"harold bridger traditional societies." » "harold drives traditional societies.", "harold gender traditional societies.", "harold under traditional societies.", "harold bradley traditional societies."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("harold bridger traditional societies.") or ("harold bridger transitional period."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harold bridger traditional societies.") OR ("harold bridger transitional period.")).
• Removing quotes may allow a broader search: (( harold bridger traditional societies. ) or ( harold bridger transitional period. )).
• Adding a wildcard symbol may retrieve word variants: (("harold bridger traditional societies.") or ("harold bridger transitional period."))*.