Perhaps you should try some spelling variations:
motif history » motion history, motive history, motets history
20th century » 18th century
tnf history » etf history, ref history, stone history
2 germany » 7 germany, 2 german, 8 germany
2020 20th » 2020 16th, 2020 2021, 2020 5th

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 %2 germany %((((brief history) OR (((tnf history) OR (motif history))))) OR (imf history)) %2020 20th century%22.
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %2 germany %((((brief history) or (((tnf history) or (motif history))))) or (imf history)) %2020 20th century%22*.