Perhaps you should try some spelling variations:
"harold bridger transitional society." » "harold bridger traditional society.", "harold bridger traditional societies.", "harold bridger traditional social.", "harold bridge transitional society.", "harold bridges transitional society.", "harold bridget transitional society."
"harold bridger transitional period." » "harold bridger transition period.", "harold bridger transition periods.", "harold bridge transitional period.", "harold bridges transitional period.", "harold bridget transitional period."

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 transitional society.") OR ("harold bridger transitional period."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"harold bridger transitional society.\") OR (\"harold bridger transitional period.\"))".
• Removing quotes may allow a broader search: (( harold bridger transitional society. ) OR ( harold bridger transitional period. )).
• Adding a wildcard symbol may retrieve word variants: (("harold bridger transitional society.") OR ("harold bridger transitional period."))*.