Perhaps you should try some spelling variations:
elf education » self education, deaf education, f education
ref history » reef history, bief history, etf history
13 bavaria » _ bavaria, ne bavaria, ii bavaria
2 germany » 7 germany, 8 germany, 5 germany
2 german » 3 german, 5 german

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: %22jews %elf education %((2 germany) OR (2 german)) %13 bavaria %((ref history) OR (((imf history) OR (brief history))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22jews %elf education %((2 germany) or (2 german)) %13 bavaria %((ref history) or (((imf history) OR (brief history))))%22".
• Adding a wildcard symbol may retrieve word variants: %22jews %elf education %((2 germany) or (2 german)) %13 bavaria %((ref history) or (((imf history) OR (brief history))))%22*.