Perhaps you should try some spelling variations:
elf education » self education, f education, jrf education
imf history » brief history
13 bavaria » _ bavaria, ne bavaria, ii bavaria
2f history » etf history, ref history, tnf history
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) OR (deaf education)) %((2 german) OR (7 germany)) %13 bavaria %((2f history) OR (imf history))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22jews %((elf education) OR (deaf education)) %((2 german) or (7 germany)) %13 bavaria %((2f history) or (imf history))%22".
• Adding a wildcard symbol may retrieve word variants: %22jews %((elf education) OR (deaf education)) %((2 german) or (7 germany)) %13 bavaria %((2f history) or (imf history))%22*.