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

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