Perhaps you should try some spelling variations:
sales studies » scale studies, cases studies, papers studies
harvard blood » harvard cold
from surveys » from survey, firm surveys, force surveys
harvard bond » harvard cold, harvard home
blood urban » flood urban, good urban, beyond urban
bond sales » land sales, food sales
book » books, ebook

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( harvard blood urban studies from surveys. ) OR ( harvard bond sales studies book series. ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( harvard blood urban studies from surveys. ) OR ( harvard bond sales studies book series. ))".
• Adding a wildcard symbol may retrieve word variants: (( harvard blood urban studies from surveys. ) OR ( harvard bond sales studies book series. ))*.