Perhaps you should try some spelling variations:
"support grant integrationstheorie 2." » "support eine integrationstheorie 2.", "support der integrationstheorie 2.", "support grant integrationstheorie fur.", "support grant integration theories.", "support grant interpretationstheorie 2."
"supply spate irrigation scheme." » "supply spate irrigation systems.", "supply scale irrigation scheme.", "supply water irrigation scheme.", "supply surge irrigation scheme.", "supply system irrigation scheme.", "supply side irrigation scheme."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("support grant integrationstheorie 2.") OR ("supply spate irrigation scheme."))~.
• Removing quotes may allow a broader search: (( support grant integrationstheorie 2. ) or ( supply spate irrigation scheme. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support grant integrationstheorie 2.") or ("supply spate irrigation scheme."))*.