Perhaps you should try some spelling variations:
motif history » motion history, motive history, motets history
tnf history » etf history, ref history, stone history
imf history » brief history
21 germany » 11 germany, 2 germany, 20 germany

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: %22agriculture AND state %21 germany %((((tnf history) OR (motif history))) OR (imf history)) %20 ((20th century) OR (18th century))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %21 germany %((((tnf history) or (motif history))) or (imf history)) %20 ((20th century) OR (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %21 germany %((((tnf history) or (motif history))) or (imf history)) %20 ((20th century) OR (18th century))%22*.