Perhaps you should try some spelling variations:
language cognition » language acquisition
transformations 3 » transformations _, transformations 1, transformations 4
cognition costs » cognition cross, cognition casc, cognition goals
4 developing » 3 developing
developing 2 » developing _, developing a, developing e
d language » 3 language, 1 language, 2 language
costs 4 » costs _, costs a, costs 4.2
2 areas » 1 areas, 2 areal, 4 areas

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologies _ transformations 3 d language cognition costs 4 developing 2 areas.*.