Perhaps you should try some spelling variations:
"central basic research program success." » "central basic research project success.", "central basic research program stress.", "central based research program success.", "central asia research program success.", "central bajio research program success.", "neutral basic research program success."
"central cgiar research programs stress." » "central cgiar research projects stress.", "central cgiar research program stress.", "central cgiar research programs series.", "central cgiar research programs systems.", "central asia research programs stress.", "central asian research programs stress.", "central city research programs stress."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("central basic research program success.") or ("central cgiar research programs stress."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("central basic research program success.") OR ("central cgiar research programs stress.")).
• Removing quotes may allow a broader search: (( central basic research program success. ) or ( central cgiar research programs stress. )).
• Adding a wildcard symbol may retrieve word variants: (("central basic research program success.") or ("central cgiar research programs stress."))*.