Perhaps you should try some spelling variations:
"support options international efforts." » "support options international airports.", "support options international energy.", "support options international airport.", "support nations international efforts.", "support positions international efforts.", "support unions international efforts.", "support operations international efforts.", "supply options international efforts.", "support functions international 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 international efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support data irrigation schemes.") OR ("support options international efforts.")).
• Removing quotes may allow a broader search: (( support data irrigation schemes. ) or ( support options international efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("support data irrigation schemes.") or ("support options international efforts."))*.