Perhaps you should try some spelling variations:
"central basic research project epi." » "central based research project epi.", "central asia research project epi.", "central bajio research project epi.", "neutral basic research project epi.", "central basic research project ep.", "central basic research project e.", "central basic research project ed."
"central food research project nrip." » "central field research project nrip.", "central blood research project nrip.", "central fund research project nrip.", "central funds research project nrip.", "central food research project azrip.", "central food research project nvirp.", "central food research project aid."

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 food research project nrip.") OR ("central basic research project epi."))~.
• Removing quotes may allow a broader search: (( central food research project nrip. ) or ( central basic research project epi. ))~.
• Adding a wildcard symbol may retrieve word variants: (("central food research project nrip.") or ("central basic research project epi."))*.