Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologies 4 » technologies _
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
4 transition » 2 transition, de transition, en transition
transition i » transition _, transition a, transition 3
und science » food science
cost 3.2 » cost 2.4
i und » _ und

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 transition i und science communication cost 3.2 developing _ areal.*.