Perhaps you should try some spelling variations:
otras communication » optical communication, towards communication, actors communication
communication model » communication media
sem development » term development, team development, item development
technologies 4 » technologies _
4 information » 2 information, 1 information
bank african » bank africa, pan african, baga african
model sem » model set, model sbm, model sm
d otras » de otras, y otras, 3 otras
gap d » gap _, gap 4, gap a

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information gap d otras communication model sem development bank african.*.