Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
et communication » et communicatione, get communication, debt communication
technologie 3d » technologies 3d, technologie 3, technologie und
3d information » d information, nd information, od information
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
contents 1.3 » contents 1.1, contents 2.3, contexts 1.3
1.3 et » 1.3 el, 1.3 ea, 1.3 ed

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

• Adding a wildcard symbol may retrieve word variants: technologie 3d information contents 1.3 et communication cost 2.4 developing _ africa.*.