Perhaps you should try some spelling variations:
communication models » communications models, communication model, communication modes
3.2 communication » 3 communication, 2.3 communication, de communication
l developpement » le developpement, de developpement, et developpement
developpement l » developpement il, developpement la, developpement de
inflation und » inflation index, inflation _, inflation tax
l afrique » en afrique
und rice » und race, under rice, und rache
rice 3.2 » price 3.2, rice 3.1, rice 3.3
models l » 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: techno domestic inflation und rice 3.2 communication models l developpement l afrique.*.