Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologies energy » technologies general, technology energy, technologies any
4.3 developing » 3.3 developing, 1.3 developing, 7.3 developing
information 1 » information 2, information 3, information 3.2
era personal » a personal, der personal, e personal
developing a » developing _
costs 4.3 » costs 4.2, costs 4.4, costs 2.3
a areas » 1 areas, 2 areas, 4 areas
1 era » _ era, 0 era, 1 ra

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

• Adding a wildcard symbol may retrieve word variants: technologies energy information 1 era personal communication costs 4.3 developing a areas.*.