Perhaps you should try some spelling variations:
"supply land conservation work." » "supply land construction work.", "supply land conservation water.", "supply land construction works.", "supply water conservation work.", "supply land consolidation work.", "supply _ conservation work.", "supply demand conservation work.", "supply lines conservation work."
"supply water irrigation reform." » "supply water immigration reform.", "supply water irrigation network.", "supply water irrigation sector.", "supply water sanitation reform.", "supply scale irrigation reform.", "supply canal irrigation reform."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply land conservation work.") or ("supply water irrigation reform."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply land conservation work.") OR ("supply water irrigation reform.")).
• Removing quotes may allow a broader search: (( supply land conservation work. ) or ( supply water irrigation reform. )).
• Adding a wildcard symbol may retrieve word variants: (("supply land conservation work.") or ("supply water irrigation reform."))*.