Perhaps you should try some spelling variations:
"support eu immigration regimes." » "support eu migration regimes.", "support eu migration regime.", "support eu integration regimes.", "support net immigration regimes.", "support new immigration regimes.", "support _ immigration regimes.", "support a immigration regimes.", "support 4 immigration regimes."
"support trade integration series." » "support trade integration services.", "support trade interaction series.", "support trade integration server.", "support trainer integration series.", "export trade integration series.", "import trade integration series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support eu immigration regimes.") or ("support trade integration series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support eu immigration regimes.") OR ("support trade integration series.")).
• Removing quotes may allow a broader search: (( support eu immigration regimes. ) or ( support trade integration series. )).
• Adding a wildcard symbol may retrieve word variants: (("support eu immigration regimes.") or ("support trade integration series."))*.