Perhaps you should try some spelling variations:
communication models » communications models, communication model, communication modes
csr communication » de communication, 3 communication, 4 communication
development can » development case, development co, development canada
technologies 2 » technologies _, technologies 4
can africa » urban africa
gap 3.1.2 » gap 3.3.2, gap 4.1.2, gap 3.3.3
3.1.2 csr » 3.1.2 der, 3.1.2 cfd
models 2 » models 1, models 3, models 4

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information gap 3.1.2 csr communication models 2 development can africa.*.