Perhaps you should try some spelling variations:
"central cgiar research team series." » "central climate research team series.", "central asia research team series.", "central asian research team series.", "central city research team series.", "central cgiar research areas series.", "central cgiar research a series."
"central urban research firm surveys." » "central bank research firm surveys.", "central asian research firm surveys.", "intra urban research firm surveys.", "central urban research firm survey."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("central cgiar research team series.") or ("central urban research firm surveys."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("central cgiar research team series.") OR ("central urban research firm surveys."))*.
• Removing quotes may allow a broader search: (( central cgiar research team series. ) or ( central urban research firm surveys. ))*.