Perhaps you should try some spelling variations:
"support migrant international efforts." » "support migration international efforts.", "support first international efforts.", "support migrant integration efforts.", "support migrant international airports.", "support migrant international energy.", "support migrant international airport.", "support grant international efforts."
"support from irrigation scheme." » "support from irrigation systems.", "support farm irrigation scheme.", "support crop irrigation scheme.", "support furrow irrigation scheme."

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: (("support from irrigation scheme.") OR ("support migrant international efforts."))~.
• Removing quotes may allow a broader search: (( support from irrigation scheme. ) or ( support migrant international efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support from irrigation scheme.") or ("support migrant international efforts."))*.