Perhaps you should try some spelling variations:
"support grant international social." » "support grant international journal.", "support grant international seminar.", "support grant international commercial.", "support ghana international social.", "support plants international social.", "support trade international social."
"supply curve irrigation schemes." » "supply curve irrigation scheme.", "supply curve irrigation systems.", "supply large irrigation schemes.", "supply crop irrigation schemes.", "supply surface irrigation schemes."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support grant international social.\") OR (\"supply curve irrigation schemes.\"))~".
• Removing quotes may allow a broader search: (( support grant international social. ) OR ( supply curve irrigation schemes. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support grant international social.") OR ("supply curve irrigation schemes."))*.