Perhaps you should try some spelling variations:
"support options integration efforts." » "support options international efforts.", "support options conservation efforts.", "support adoption integration efforts.", "support national integration efforts.", "support persons integration efforts.", "support operations integration efforts.", "supply options integration efforts.", "support functions integration efforts."
"support data irrigation schemes." » "support data irrigation scheme.", "support data irrigation systems.", "support delta irrigation schemes.", "support canal irrigation schemes.", "support water irrigation schemes.", "support a irrigation schemes.", "support de irrigation schemes."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support data irrigation schemes.") or ("support options integration efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support data irrigation schemes.") OR ("support options integration efforts.")).
• Removing quotes may allow a broader search: (( support data irrigation schemes. ) or ( support options integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("support data irrigation schemes.") or ("support options integration efforts."))*.