Perhaps you should try some spelling variations:
"harvard clld urban studies book series." » "harvard cold urban studies book series.", "harvard camp urban studies book series.", "harvard led urban studies book series.", "harvard clld urban studies books series.", "harvard clld urban studies ebook series."
"harvard bond case studies from sources." » "harvard cold case studies from sources.", "harvard home case studies from sources.", "harvard bond cash studies from sources.", "harvard blind case studies from sources.", "harvard board case studies from sources."

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: (("harvard clld urban studies book series.") OR ("harvard bond case studies from sources."))~.
• Removing quotes may allow a broader search: (( harvard clld urban studies book series. ) or ( harvard bond case studies from sources. ))~.
• Adding a wildcard symbol may retrieve word variants: (("harvard clld urban studies book series.") or ("harvard bond case studies from sources."))*.