Perhaps you should try some spelling variations:
"support group international efforts." » "support group international airports.", "support group international energy.", "support group international airport.", "support crop international efforts.", "support growth international efforts.", "support up international efforts.", "support grant international efforts."
"supply canal irrigation systems." » "supply scale irrigation systems.", "supply canada irrigation systems.", "supply annual irrigation systems.", "supply china irrigation systems.", "supply canal irrigation system."

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: (("supply canal irrigation systems.") OR ("support group international efforts."))~.
• Removing quotes may allow a broader search: (( supply canal irrigation systems. ) or ( support group international efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply canal irrigation systems.") or ("support group international efforts."))*.