Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
back information » bank information, pack information, lack information
technology back » technology book, technology stacks, technology based
developpement l » developpement il, developpement la, developpement de
about from » about frame, out from, about food
l afrique » en afrique
from 4.1 » from 3.1, from 4.5, from 1.1b

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

• Adding a wildcard symbol may retrieve word variants: technology back information about from 4.1 communication costs _ developpement l afrique.*.