Perhaps you should try some spelling variations:
communication effors » communication efforts, communication errors, communication factors
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
transfer factors » transfer factor, transfer across, transfer functions
pt developpement » et developpement, et developpements, de developpement
developpement de » developpement des, developpement durable
factors case » factors cause, factor case, factors age
de afrique » de l'afrique, en afrique, l afrique
case case » base case, case based, use case
case 3.5 » cases 3.5, case 3.5a, case 3.1

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

• Adding a wildcard symbol may retrieve word variants: technology transfer factors case case 3.5 communication effors pt developpement de afrique.*.