Perhaps you should try some spelling variations:
peru communications » paper communications, cell communications, eu communication
der developpements » des developpements, deux developpements, de developpement
formulation needs » formulation des, information needs, formulation de
developpements en » developpement en, developpement et, developpements de
technologies 3 » technologies _, technologies 4, technologies 2
3 formulation » _ formulation, _ formulating
needs 2.5 » needs 4.5, needs 2.3, needs 2.8
2.5 peru » 2015 peru, 2.5 peer

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 formulation needs 2.5 peru communications _ der developpements en afrique.*.