Perhaps you should try some spelling variations:
"supply large irrigation schemes." » "supply large irrigation scheme.", "supply large irrigation systems.", "supply farm irrigation schemes.", "supply drip irrigation schemes.", "supply scale irrigation schemes.", "supply charges irrigation schemes.", "supply targets irrigation schemes.", "supply curve irrigation schemes."
"supply balkan integration some." » "supply asian integration some.", "supply asean integration some.", "supply urban integration some.", "supply balkan integration south.", "supply balkan integration soziale.", "supply balkan integration social."

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

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