Perhaps you should try some spelling variations:
"central asia research program success." » "central asia research programs success.", "central asia research project success.", "central basic research program success.", "central media research program success.", "central china research program success."
"central city research program stress." » "central city research programs stress.", "central city research project stress.", "central city research program synthesis.", "central society research program stress.", "central equity research program stress.", "central key research program stress.", "central cities research program 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 asia research program success.") or ("central city research program stress."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("central asia research program success.") OR ("central city research program stress.")).
• Removing quotes may allow a broader search: (( central asia research program success. ) or ( central city research program stress. )).
• Adding a wildcard symbol may retrieve word variants: (("central asia research program success.") or ("central city research program stress."))*.