Perhaps you should try some spelling variations:
"supply can integration theories." » "supply can integration theory.", "supply can integration through.", "supply can integration efforts.", "supply chain integration theories.", "supply care integration theories.", "supply urban integration theories.", "supply case integration theories.", "supply a integration theories."
"supply low irrigation schemes." » "supply low irrigation scheme.", "supply low irrigation systems.", "supply led irrigation schemes.", "supply flood irrigation schemes.", "supply local irrigation schemes.", "supply how irrigation schemes.", "supply crowd 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 can integration theories.") or ("supply low irrigation schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply can integration theories.") OR ("supply low irrigation schemes."))*.
• Removing quotes may allow a broader search: (( supply can integration theories. ) or ( supply low irrigation schemes. ))*.