Perhaps you should try some spelling variations:
"supply channels mitigation scheme." » "supply change mitigation scheme.", "supply carers mitigation scheme.", "supply channel estimation scheme.", "supply channels irrigation scheme.", "supply channels irrigation schemes.", "supply channels mitigation systems.", "supply chains mitigation scheme."
"supply city sanitation systems." » "supply city irrigation systems.", "supply site sanitation systems.", "supply security sanitation systems.", "supply water sanitation systems.", "supply cote sanitation systems.", "supply costs sanitation systems.", "supply china sanitation systems."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply channels mitigation scheme.") or ("supply city sanitation systems."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply channels mitigation scheme.") OR ("supply city sanitation systems."))*.
• Removing quotes may allow a broader search: (( supply channels mitigation scheme. ) or ( supply city sanitation systems. ))*.