Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
information 4.3.3 » information 3.3, information 4.2, information 1.5.2
development basic » development baltic, development asia, development based
technologies 4 » technologies _
4 information » 2 information, 1 information
basic areas » basin area, basic ideas, basic access
a mobile » _ mobile
4.3.3 a » 4.3.3 _, 4.3.3 das

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 4.3.3 a mobile communications costs _ development basic areas.*.