Perhaps you should try some spelling variations:
literature oral » literature moral, literatura oral, literature morals
literatur arab » literatura arab, literature arab, literatur ab
1 literatur » 11 literatur, 1 literature
159 agenda » 1979 agenda, 10 agenda, 12 agenda
agenda _i » agenda bis, agenda 21, agenda a
1 agenda » _ agenda, 7 agenda, 3 agenda
_i 1 » _ 1, i 1, ii 1

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: (( 159 agenda _ a literature oral ) OR ( 1 agenda _i 1 literatur arab ))*.