Perhaps you should try some spelling variations:
optical communications » optic communication, political communication, digital communications
communications model » communications models, communication model, communicating model
integrated model » integrated water
et developpement » de developpement, le developpement, test development
developpement l » developpement il, developpement la, developpement de
technology dlt » technology data, technology debts, technology 21st
dlt integrated » debt integrated, der integrated, deltas integrated
3 optical » _ optical, 3 optimal, 3.3 optical
l afrique » en afrique
model et » model ee, model em, model eu

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

• Adding a wildcard symbol may retrieve word variants: technology dlt integrated model 3 optical communications model et developpement l afrique.*.