Perhaps you should try some spelling variations:
"meet national research : july 2007" » "meet educational research : july 2007", "net national research : july 2007", "west national research : july 2007", "detect national research : july 2007", "meet national research : july 2008", "meet national research : july 2013", "meet national research : july 2012"
"seed science research : july 2007" » "needs science research : july 2007", "oecd science research : july 2007", "seeing science research : july 2007", "seed science research : july 2008", "seed science research : july 2013", "seed science research : july 2012"

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: (("seed science research : july 2007") OR ("meet national research : july 2007"))~.
• Removing quotes may allow a broader search: (( seed science research : july 2007 ) or ( meet national research : july 2007 ))~.
• Adding a wildcard symbol may retrieve word variants: (("seed science research : july 2007") or ("meet national research : july 2007"))*.