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 basic research firm series." » "central bank research firm series.", "central asia research firm series.", "central banks research firm series.", "central basic research firm surveys."

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: (("central cgiar research team series.") OR ("central basic research firm series."))~.
• Removing quotes may allow a broader search: (( central cgiar research team series. ) or ( central basic research firm series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("central cgiar research team series.") or ("central basic research firm series."))*.