Perhaps you should try some spelling variations:
"supply assets integration theories." » "supply assets integration theorems.", "supply assets integrationstheorie 2.", "supply assets integration theory.", "supply datasets integration theories.", "supply markets integration theories.", "supply access integration theories.", "supply costs integration theories."
"supply fare irrigation schemes." » "supply fare irrigation scheme.", "supply fare irrigation systems.", "supply farm irrigation schemes.", "supply large irrigation schemes.", "supply scale irrigation schemes.", "supply case irrigation schemes.", "supply figure 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 fare irrigation schemes.") or ("supply assets integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply fare irrigation schemes.") OR ("supply assets integration theories.")).
• Removing quotes may allow a broader search: (( supply fare irrigation schemes. ) or ( supply assets integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("supply fare irrigation schemes.") or ("supply assets integration theories."))*.