Perhaps you should try some spelling variations:
"support de integration efforts." » "support de international efforts.", "support de conservation efforts.", "support die integration efforts.", "support re integration efforts.", "support une integration efforts.", "support _ integration efforts.", "support a integration efforts.", "support 4 integration efforts."
"support data irrigation systems." » "support delta irrigation systems.", "support canal irrigation systems.", "support water irrigation systems.", "support a irrigation systems.", "support data 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: (("support data irrigation systems.") OR ("support de integration efforts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support data irrigation systems.\") OR (\"support de integration efforts.\"))".
• Removing quotes may allow a broader search: (( support data irrigation systems. ) OR ( support de integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("support data irrigation systems.") OR ("support de integration efforts."))*.