Perhaps you should try some spelling variations:
"support patient interaction efforts." » "support patient integration efforts.", "support patient interaction effects.", "support patient interaction affects.", "support patient information efforts.", "support matter interaction efforts.", "support patient satisfaction efforts.", "support patients interaction efforts.", "support payments interaction efforts.", "support client interaction efforts."
"support de irrigation scheme." » "support de irrigation systems.", "support de l'irrigation scheme.", "support led irrigation scheme.", "support fed irrigation scheme.", "support _ irrigation scheme.", "support a irrigation scheme.", "support 4 irrigation scheme."

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

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