Perhaps you should try some spelling variations:
"support pilots integrationstheorie 2." » "support eine integrationstheorie 2.", "support der integrationstheorie 2.", "support pilots integrationstheorie fur.", "support pilots integration theories.", "support pilots interpretationstheorie 2.", "support plans integrationstheorie 2.", "support distorts integrationstheorie 2.", "support patients integrationstheorie 2."
"support water irrigation schemes." » "support water irrigation scheme.", "support water irrigation systems.", "support scale irrigation schemes.", "support canal irrigation schemes.", "support farm irrigation schemes.", "support chapter irrigation schemes.", "support greater irrigation schemes.", "support better 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: (("support water irrigation schemes.") or ("support pilots integrationstheorie 2."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support water irrigation schemes.") OR ("support pilots integrationstheorie 2.")).
• Removing quotes may allow a broader search: (( support water irrigation schemes. ) or ( support pilots integrationstheorie 2. )).
• Adding a wildcard symbol may retrieve word variants: (("support water irrigation schemes.") or ("support pilots integrationstheorie 2."))*.