Perhaps you should try some spelling variations:
relational language » rational languages, national language, regional language
22latin language » latin language, relation language, plain language
2f grammar » 2 grammar, 22 grammar, 26 grammar
2f early » 20 early, 21 early, 22 early

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: %((22latin language) OR (relational language)) %2f grammar %2f early works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %((22latin language) or (relational language)) %2f grammar %2f early works to 1800%22*.