Perhaps you should try some spelling variations:
formal communication » informal communication, oral communication, moral communication
communication cost » communication costs, communication costa, communications costs
models development » model development, module development, model developments
2.2 information » 4.2 information, 2.2.3 information, 2.2 transformation
technology 2.2 » technology _, technology 1, technology 3
information 2 » information 3
does formal » loss formal, does formality, des formalen
cost models » cost model, logit models
1 afrique » l afrique, en afrique, 1 enrique
2 does » 4 does

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 information 2 does formal communication cost models development 1 afrique.*.