Perhaps you should try some spelling variations:
"import dutch integration schengen." » "import dutch integration changed.", "import dutch integration schemes.", "import dutch integration challenges.", "import youth integration schengen.", "import dutch international schengen.", "import duty integration schengen.", "import dutie integration schengen.", "import duties integration schengen."
"supply factor integration series." » "supply facto integration series.", "supply sector integration series.", "supply actor interaction series.", "supply factor integration services.", "supply factor interaction series.", "supply factor integration server.", "supply factors integration series."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"import dutch integration schengen.\") OR (\"supply factor integration series.\"))~".
• Removing quotes may allow a broader search: (( import dutch integration schengen. ) OR ( supply factor integration series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("import dutch integration schengen.") OR ("supply factor integration series."))*.