Perhaps you should try some spelling variations:
under communication » jander communication, modern communication, de communication
clean development » human development, urban development
technologies 2 » technologies _, technologies 4
information pt » information part, information 1, information 1.2
impact africa » impact african
1990 under » 1990 und, 10 under, 1990 der
pt 1990 » act 1990

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information pt 1990 under communication _ clean development impact africa.*.