Perhaps you should try some spelling variations:
"central basic research programs stress." » "central basic research program stress.", "central basic research programs series.", "central basic research programs systems.", "central based research programs stress.", "central asia research programs stress.", "central bajio research programs stress.", "neutral basic research programs stress."
"central ii research project success." » "central 3 research project success.", "central 2 research project success.", "central 1 research project success.", "central inc research project success.", "central _ research project success.", "central de research project success.", "central ii research projects success."

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 programs stress.") or ("central ii research project success."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("central basic research programs stress.") OR ("central ii research project success."))*.
• Removing quotes may allow a broader search: (( central basic research programs stress. ) or ( central ii research project success. ))*.