Perhaps you should try some spelling variations:
immigration policies » immigration policy, migration policy
costs immigration » mass immigration, gross immigration, does immigration
integration some » integration south, integration soziale, integration social
von integration » von interaktion, can integration, 1.2 integration
supply von » supply ann, supply donor

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply von integration some. ) or ( supply costs immigration policies. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply von integration some. ) OR ( supply costs immigration policies. )).
• Adding a wildcard symbol may retrieve word variants: (( supply von integration some. ) or ( supply costs immigration policies. ))*.