Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
communication model » communication media
technology model » technology models, technology code, technology moral
model integrated » model integrate, model integration, models integrating
au developpement » du developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
integrated land » integrated plan, integrated flood, integrated care
3 optical » _ optical, 3 optimal, 3.3 optical
model au » modele au, model a, model aa
land 3 » gland 3, land _, land a

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

• Adding a wildcard symbol may retrieve word variants: technology model integrated land 3 optical communication model au developpement en afrique.*.