Perhaps you should try some spelling variations:
design conclusions » design conclusion
win conversations » when conversations, wine conversation, wins conversation
21 germany » 2.1 germany, 11 germany, 2 germany
2f history » imf history, etf history, ref history

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: %22christian ((win conversations) OR (design conclusions)) %21 germany %2f history %20 ((20th century) OR (18th century))%22.
• Adding a wildcard symbol may retrieve word variants: %22christian ((win conversations) or (design conclusions)) %21 germany %2f history %20 ((20th century) or (18th century))%22*.