Perhaps you should try some spelling variations:
teoria linguistica » teorias linguisticas, varia linguistica, norma linguistica
theory linguistics » typology linguistics
studia teoria » studie theorie, studio teorico, sulla teoria
studie theory » studies theory, studie theorie, study theory

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: (( studia teoria linguistica ) OR ( studie theory linguistics )).
• Adding a wildcard symbol may retrieve word variants: (( studia teoria linguistica ) or ( studie theory linguistics ))*.