Perhaps you should try some spelling variations:
"support a integration theory." » "support a integration through.", "support a information theory.", "support a innovation theory.", "support 3 integration theory.", "support 2 integration theory.", "support 4 integration theory.", "support _ integration theory."
"supply spate irrigation schemes." » "supply spate irrigation scheme.", "supply spate irrigation systems.", "supply scale irrigation schemes.", "supply water irrigation schemes.", "supply surge irrigation schemes.", "supply system irrigation schemes.", "supply side irrigation schemes."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply spate irrigation schemes.") or ("support a integration theory."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply spate irrigation schemes.") OR ("support a integration theory.")).
• Removing quotes may allow a broader search: (( supply spate irrigation schemes. ) or ( support a integration theory. )).
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