Perhaps you should try some spelling variations:
"support carbon irrigation schemes." » "support carbon irrigation scheme.", "support carbon irrigation systems.", "support carbon mitigation schemes.", "support crop irrigation schemes.", "support canal irrigation schemes.", "supporting carbon irrigation schemes."
"support bank information theory." » "support can information theory.", "support based information theory.", "support urban information theory.", "support grant information theory.", "support basic information theory.", "support plans information theory."

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

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