Perhaps you should try some spelling variations:
integration policies » immigration policies, international policies, migration policies
integration social » international social
und integration » grid integration, und interpretation
supply fare » supply farm, supply figure, supply curve
supply case » supply cost, supply chain, supply curve
supply und » supply under, supply u.s, supply ann

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

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