Perhaps you should try some spelling variations:
"support soziale integration series." » "support soziale integration services.", "support soziale interaction series.", "support soziale integration server.", "support social integration series."
"supply main irrigation schemes." » "supply main irrigation scheme.", "supply main irrigation systems.", "supply basin irrigation schemes.", "supply grain irrigation schemes.", "supply saline irrigation schemes.", "supply chain irrigation schemes.", "supply ann irrigation schemes.", "supply many irrigation schemes."

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 soziale integration series.") OR ("supply main irrigation schemes."))~.
• Removing quotes may allow a broader search: (( support soziale integration series. ) or ( supply main irrigation schemes. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support soziale integration series.") or ("supply main irrigation schemes."))*.