Perhaps you should try some spelling variations:
"support migrant integration efforts." » "support market integration efforts.", "support migrant international efforts.", "support migrant conservation efforts.", "support migrants integration efforts.", "support grant integration efforts.", "supporting migrants integration efforts."
"supply rural irrigation systems." » "supply murray irrigation systems.", "supply canal irrigation systems.", "supply gray irrigation systems.", "supply curve irrigation systems.", "supply rural 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: (("supply rural irrigation systems.") or ("support migrant integration efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply rural irrigation systems.") OR ("support migrant integration efforts.")).
• Removing quotes may allow a broader search: (( supply rural irrigation systems. ) or ( support migrant integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("supply rural irrigation systems.") or ("support migrant integration efforts."))*.