Perhaps you should try some spelling variations:
"support grid integration efforts." » "support grid international efforts.", "support grid conservation efforts.", "support agri integration efforts.", "support grant integration efforts.", "support group integration efforts."
"support africa irrigation systems." » "support africa immigration systems.", "support syria irrigation systems.", "support drip irrigation systems.", "supporting africa irrigation systems.", "supply africa irrigation systems.", "support price irrigation systems.", "support africa irrigation system."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support africa irrigation systems.") OR ("support grid integration efforts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support africa irrigation systems.\") OR (\"support grid integration efforts.\"))*".
• Removing quotes may allow a broader search: (( support africa irrigation systems. ) OR ( support grid integration efforts. ))*.