Perhaps you should try some spelling variations:
integration soziale » integration social
taxes integration » spaces integration, values integration, res integration
cost existing » co existing, cost shifting, work existing
import taxes » export taxes
do existing » co existing, _ existing, 2 existing

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply ((cost existing) OR (do existing)) services. ) or ( import taxes integration soziale. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply ((cost existing) OR (do existing)) services. ) OR ( import taxes integration soziale. ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply ((cost existing) OR (do existing)) services. ) or ( import taxes integration soziale. ))*".