Perhaps you should try some spelling variations:
communication 3.3 » communication _, communication a, communication 1
et communication » et communicatione, get communication, debt communication
development case » development china
total labor » local labor, total factor
labor price » labour prices, labor crime, labor practice
case africa » cases africa, care africa, curse africa
3.3 human » 3.2 human, d.c human, 2.1 human
price et » price _, price 3, price a

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

• Adding a wildcard symbol may retrieve word variants: technologien _ total labor price et communication 3.3 human development case africa.*.