Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
developpement en » developpement et, developpement des, developpement de
notation papers » notation part, notation chapter
1 communication » 10 communication, 3 communication, 4 communication
technology der » technology does, technology 4ir, technology dlt
der notation » der rotation, der nation, ket notation
other 1 » other _, other a, other 3

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

• Adding a wildcard symbol may retrieve word variants: technology der notation papers other 1 communication _ leur developpement en afrique.*.