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 can irrigation schemes.", "support common irrigation schemes."
"support bank information theory." » "support urban information theory.", "support 1 information theory.", "support can information theory.", "support basic information theory.", "support a information theory."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"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."))*.