Perhaps you should try some spelling variations:
worter sprachen » formaler sprachen
world worter » world water, world worth, world walter
two world » two worlds
1808 two » 18 two, 1.8 two, 13.8 two
ii third » iii third, 8 third
7 third » 3 third, 5 third, 6 third

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: 1808 two world worter sprachen ((ii third) OR (7 third)).
• Adding a wildcard symbol may retrieve word variants: 1808 two world worter sprachen ((ii third) or (7 third))*.